We apply the method of Dalgarno and Lewis to scattering states and discuss the choice of the unperturbed model in order to have a convergent perturbation series for the phase shift.

The ratio of double-to-single ionization of He has been measured between 280 eV and 1210 eV to investigate its energy dependence in the intermediate region. The new intermediate energy measurement, compared with the most recent theories of Pan and Kelly and of Hino and Hino et al., show the importance of including not only ground state but also final state correlations. They also appear to indi...

The L11 ribosomal protein operon of Escherichia coli contains the genes for L11 and L1 and is feedback regulated by the translational repressor L1. The mRNA target site for this repression is located close to the Shine-Dalgarno sequence for the first cistron, rp1K (L11). By use of a random mutagenesis procedure we have isolated and characterized a series of point mutations in the L11 leader mRN...

Regulatory elements in genetic data are often short and variable, their identification and discovery using computational algorithms is difficult. A model based on communication theory concepts and used by Dawy, et al., [1], is used to model the process of translation in gene expression. The model assumes the ribosome decodes the mRNA sequence by using the 3’ end of the 16SrRNA molecule as an em...

in this paper, we introduce and study the concepts of $mathcal{i}_2$-convergence, $mathcal{i}_2^{*}$-convergence for double sequences of fuzzy real numbers, where $mathcal{i}_2$ denotes the ideal of subsets of $mathbb n times mathbb n$. also, we study some properties and relations of them.

Back Cover: In article number 2200071, Kenneth Dalgarno and co-workers describe the reactive jet impingement bioprinting system as an effective strategy to deliver high cell concentrations directly onto metal surfaces with various topographies. Mesenchymal stromal cells are bioprinted in soft hydrogel matrices that provide extracellular matrix-like environment. The cell-laden hydrogels integrat...