Viracochiella orientalis, a new species of oribatid mites (Acariformes, Oribatida) of the family Ceratozetidae from Sakhalin

A new species, Viracochiella orientalis sp. n., from the southern part of Sakhalin is described. The species differs in the shape of cuspises with strong medial teeth and in the absence of translamellae. The smooth notogaster, shorter interlamellar and genital setae, and some other characters distinguish this species from V. tuberculata. This species differs from V. sergienkoae in the number of genital setae (V. sergienkoae has five pairs), shorter interlamellar setae, smooth trichobothria, fine pore areas without borders of sclerotization, and thin hysterosomal setae.     

Home Range Use by a Male Siberian Musk Deer (Moschus moschiferus L.) in Central Sikhote-Alin

Biology Bulletin - Movements of male musk deer in coniferous forests of the Sikhote-Alin Biosphere Reserve were studied in 2014–2015 to identify relationships between the home range use and...     

Strain and elasticity imaging in compression optical coherence elastography: The two-decade perspective and recent advances

Quantitative mapping of deformation and elasticity in optical coherence tomography has attracted much attention of researchers during the last two decades. However, despite intense effort it took ~15 years to demonstrate optical coherence elastography (OCE) as a practically useful technique. Similarly to medical ultrasound, where elastography was first realized using the quasi-static compression principle and later shear-wave-based systems were developed, in OCE these two approaches also developed in parallel. However, although the compression OCE (C-OCE) was proposed historically earlier in the seminal paper by J. Schmitt in 1998, breakthroughs in quantitative mapping of genuine local strains and the Young's modulus in C-OCE have been reported only recently and have not yet obtained sufficient attention in reviews. In this overview, we focus on underlying principles of C-OCE; discuss various practical challenges in its realization and present examples of biomedical applications of C-OCE. The figure demonstrates OCE-visualization of complex transient strains in a corneal sample heated by an infrared laser beam.     

Functional characteristics of the recA gene from Serratia marcescens strain Sb

The cloned recA gene from Serratia marcescens Sb was expressed and complemented defects in the UV repair, recombination, and SOS induction of an Escherichia coli host deleted for recA. Moreover, the Serratia gene, recA (Sm), supported the same frequency of recombination per unit length of DNA as did the homologous Escherichia coli gene, recA(Ec).     

To the Theory of the Supercompensation Phenomenon with a Nonlinear Overdamped Oscillator Model

Biophysics - An analytical approach was proposed to describe the supercompensation phenomenon on the basis of a nonlinear overdamped Duffing oscillator equation. An expression was obtained for the...