Some members of the naphthalenediol family have been shown in previous work on PC-12 cells to act as effective antioxidants while being relatively nontoxic. In the present work, we extend that study to examine the effect of naphthalenediols on rat primary cortical neurons exposed to AAPH (2,2'-azobis (2-amidinopropane) hydrochloride), a source of peroxyl radicals. Compounds tested included the ...

The Bacillus subtilis DnaI, DnaB and DnaD proteins load the replicative ring helicase DnaC onto DNA during priming of DNA replication. Here we show that DnaI consists of a C-terminal domain (Cd) with ATPase and DNA-binding activities and an N-terminal domain (Nd) that interacts with the replicative ring helicase. A Zn2+-binding module mediates the interaction with the helicase and C67, C70 and ...

Various extensions to the Genetic Algorithm (GA) attempt to nd all or most optima in a search space containing several optima. Many of these emulate natural speciation. For co-evolutionary learning to succeed in a range of management and control problems, such as learning game strategies, such methods must nd all or most optima. However, suitable comparison studies are rare. We compare two simi...

In this paper, we address the following problem: a direction in R d is given by a vector with large integral coordinates and we have to nd a vector with bounded integral coordinates which realizes a good approximation of this direction. We present a short algorithm that eeciently computes an optimal approximation with respect to the distance to the direction. We then compare experimental result...

our studi es have shown normal cyclical patterns of ovarian stero ids and pituitary gonadotropines in pa tients with congenital absccncc o f th e uteru s. it appears that the life-long abscence of a fun ctioning uterus has no effect o n the fun ctional life span o f t he co rpus lurer um, but may have some effect in the level o f estrogenes iu th e seco nd half of the cycle.

We report the electrical resistivity, specific heat, and magnetization measurements of Y _{1-x} 1−x Nd _{x} />x Co _{2} />2 Zn _{20...

to calculation non-bonded interaction of the [cocl6]3- complex embedded in nano ring, we focus on the single wall boron-nitride b18n18 nano ring. thus, the geometry of b18n18 nano ring has been optimized by b3lyp method with epr-ii (electron paramagnetic resonance) basis set and geometry of the [cocl6]3- complex has been optimized at b3lyp method with aldrich’s vtz basis set and stuttgart rsc 1...

A new parallel algorithm is given to evaluate a straight-line program. The algorithm evaluates a program over a commutative semi-ring R of degree d and size n in time O((Iog n)(log nd)) using M(n) processors, where M(n) is the number of processors required for multiplying n x n matrices over the semi-ring R in O(log n)time.

in this note we introduce the notion of weak mccoy rings as a generalization of mccoy rings, and investigate their properties. also we show that, if is a semi-commutative ring, then is weak mccoy if and only if is weak mccoy.

We present CO(1-0) and CO(2-1) maps of the LINER galaxy NGC 7217, obtained with the IRAM interferometer, at 2.4 ′′ ×1.9 ′′ and 1.2 ′′ ×0.8 ′′ resolution respectively. The nuclear ring (at r = 12 ′′ = 0.8kpc) dominates the CO maps, and has a remarkable sharp surface density gradient at its inner edge. The latter is the site of the stellar/Hα ring, while the CO emission ring extends farther or is...