we study topological von neumann regularity and principal von neumann regularity of banach algebras. our main objective is comparing these two types of banach algebras and some other known banach algebras with one another. in particular, we show that the class of topologically von neumann regular banach algebras contains all $c^*$-algebras, group algebras of compact abelian groups and cer...

Purpose A nanodosimeter is a type of detector which measures single ionizations in small gaseous volume order to obtain ionization cluster size probability distributions for characterization radiation types. Working detectors are usually bulky machines require lot space. In this work, the authors present compact ceramic and report on first measurements 5 MeV alpha particles. Methods Single achi...