Oligonucleotide analysis, by a novel computerized procedure, was first applied to determine the sequence of an ideal E. coli promoter (Scherer et al., Nucl. Acids Res. 1978, 5:3759-3773) and has now been used to obtain the sequence of nucleotides that should be present in a messenger RNA for optimum binding to the E. coli ribosome. This sequence is: UU.UUAAAAAUUAAGGAGGUAUAUUAUGAAAAAAAUUAAAAAACU...

We explore the dynamics of adhering to rational difference formula \begin{equation*} \Psi_{m+1}=\frac{\Psi_{m-3}\Psi_{m-5}}{\Psi_{m-1} \left( \pm1\pm \Psi_{m-3}\Psi_{m-5} \right) } \quad m \in \mathbb{N}_{0} \end{equation*} where initials $\Psi_{-5}$, $\Psi_{-4}$, $\Psi_{-3}$,$\Psi_{-2}$, $\Psi_{-1}$, $\Psi_{0}$ are arbitrary nonzero real numbers. Specifically, we examine global asymptotically ...

Thirteen species of chewing lice (Insecta: Phthiraptera) were found on 46 wild passerines of 10 species in Cuc Phuong National Park in northern Vietnam. Three new species of the genera Myrsidea and Brueelia are described; they and their type hosts are: Myrsidea annae ex Schoeniparus rufogularis (Mandelli, 1873), Brueelia hrabali ex Macronous gularis (Horsfield, 1822) and Brueelia neodaumae ex Z...