BACKGROUND Impaired vascular development due to intrauterine growth retardation and postnatal-induced vascular damage by an unfavorable cardiovascular risk profile may both cause stiffer arteries in later decades. METHODS Of 524 young adults, participating in the Atherosclerosis Risk in Young Adults (ARYA) study, data on birth characteristics were obtained from the original medical records of...

We study the zero Dirichlet problem for equation $-\Delta_p u -\Delta_q = \alpha |u|^{p-2}u+\beta |u|^{q-2}u$ in a bounded domain $\Omega \subset \mathbb{R}^N$, with $1<q<p$. investigate relation between two critical curves on $(\alpha,\beta)$-plane corresponding to threshold of existence special classes positive solutions. In particular, certain neighbourhoods point $(\alpha,\beta) \left(\|\na...

Solid-state incorporation of Sn into beta (?) zeolites is a fast and efficient method to obtain Lewis acidic Sn? catalysts with high activity. The present work emphasizes the fundamental role th...

An important tool in the hyperstructure theory is the fundamental relation. The factorization of a multialgebra modulo its fundamental relation provides a functor into the category of universal algebras. The question that lead us to the results we will present is whether this functor commutes with the products. 2000 Mathematics Subject Classification: 08A05, 20N20, 08A99.

The secular evolution process which slowly transforms the morphology of a given galaxy over its lifetime through mostly internal dynamical mechanisms could naturally account for most of the observed properties of physical galaxies (Zhang 2003a). As an emerging paradigm for galaxy evolution, its dynamical foundations had been established in the past few years (Zhang 1996, 1998, 1999). In this pa...