In order to survive at temperatures of ≥60°C, thermophilic prokaryotes (Archaea and Eubacteria) have adopted different strategies. These strategies include high CG content in the coding sequences, nucleotide arrangement of purine-purine and pyrimidine-pyrimidine, methylation of nucleotides, histone/histone like proteins, reverse gyrase, cations, etc., also provide thermal stability to genome. S...

A d-angulation is a planar map with faces of degree d. We present for each integer d ≥ 3 a bijection between the class of d-angulations of girth d and a class of decorated plane trees. Each of the bijections is obtained by specializing a “master bijection” which extends an earlier construction of the first author. Bijections already existed for triangulations (d = 3) and for quadrangulations (d...

Gentlemen,?I take the liberty of submitting to you several drawings which illustrate the condition of the entrance to the vagina, and especially of the hymen, after cohabitation and childbearing. It is known to you, that hitherto the general opinion has been that the hymen by the first cohabitation was torn, and that the cicatricial retracting remains of the same formed the carunculee myrtiform...

A new approach is developed to integrate numerically the equations of motion for systems of interacting rigid polyatomic molecules. With the aid of a leapfrog framework, we directly involve principal angular velocities into the integration, whereas orientational positions are expressed in terms of either principal axes or quaternions. As a result, the rigidness of molecules appears to be an int...

In this paper we transfer classical results concerning Lyapunov stability of stationary solutions x to the classes of DAEs being most interesting for circuit simulation, thereby keeping smoothness as low as possible. We formulate all criteria in terms of the original equation. Those simple matrix criteria for checking regularity, Lyapunov stability etc. are easily realized numerically.