The cone matrix sheath is a biochemically and structurally distinct domain of the retinal interphotoreceptor matrix that is specifically associated with cone photoreceptor cell inner and outer segments. An aqueous extraction technique for the isolation of cone matrix sheath-enriched retinal fractions was developed and used to examine the structure and composition of this extracellular matrix do...

Abstract We introduce and study model-theoretic connected components of rings as an analogue definable groups. develop their basic theory use them to describe both the classical Bohr compactifications rings. then explicitly calculate some matrix groups, such discrete Heisenberg group ${\mathrm {UT}}_3({\mathbb {Z}})$ , continuous {R}})$ and, more generally, groups upper unitriangular invertible...

We describe and present a new construction method for codes using encodings from group rings. They consist primarily of two types: zero-divisor and unit-derived codes. Previous codes from group rings focused on ideals; for example cyclic codes are ideals in the group ring over a cyclic group. The fresh focus is on the encodings themselves, which only under very limited conditions result in idea...

Let $R$ be a ring (not necessarily commutative) with nonzero identity. We define $Gamma(R)$ to be the graph with vertex set $R$ in which two distinct vertices $x$ and $y$ are adjacent if and only if there exist unit elements $u,v$ of $R$ such that $x+uyv$ is a unit of $R$. In this paper, basic properties of $Gamma(R)$ are studied. We investigate connectivity and the girth of $Gamma(R)$, where $...