Rearranging Views on Neurogenesis

Rearranging Views on Neurogenesis Neuronal Death in the Absence of DNA End-Joining Proteins

somal break can be a lethal event for a cell. present results from the most recent of several related studies that have used gene " knockout " strategies in New Haven, Connecticut 06520 mice to produce null mutations in genes involved in NHEJ. The principal gene analyzed in the paper, XRCC4, was first identified based on its ability to complement Embryonic neurogenesis in mammals occurs over a ...

Diffusion on a Rearranging Lattice

In this paper we present a computer simulation of a random walk (RW) for diffusion on a rearranging lattice. The lattice consists of two types of sites – one good conducting (type 1) and the other poor conducting (type 2), distributed at random. The two types of sites are assigned different waiting times (τ1 for type 1 and τ2 for type 2) . We assume that at intervals of time τr, the site distri...

Rearranging the deck chairs on the Titanic.

Rearranging Series Constructively

Riemann’s theorems on the rearrangement of absolutely convergent and conditionally convergent series of real numbers are analysed within Bishop-style constructive mathematics. The constructive proof that every rearrangement of an absolutely convergent series has the same sum is relatively straightforward; but the proof that a conditionally convergent series can be rearranged to converge to what...

Diffusion with rearranging traps.

A model for diffusion on a cubic lattice with a random distribution of traps is developed. The traps are redistributed at certain time intervals. Such models are useful for describing systems showing dynamic disorder, such as ion-conducting polymers. In the present model the traps are infinite, unlike an earlier version with finite traps. For the infinite trap version a simple analytical calcul...