Magnonic band spectrum of spin waves in an elliptical helix.

We show that the spin-wave spectrum in an elliptical helix has a band character. The size of the first band gap calculated using the perturbation theory is shown to scale as square root of the eccentricity. Curved magnonic waveguides of the kind considered here could be used as structural elements of future three-dimensional magnonic architectures.

[Zooplankton of Reservoirs in the Upper Reaches of the Kenti River System (Northern Karelia) under Long-Term Industrial Pollution Conditions].

An assessment is given for the contemporary state of zooplankton community in the waters of the upper reaches of the Kenti River system under the conditions of long-term potash-sulfate industrial pollution. This article presents a number of structural indicators of the zooplankton community that show simplification in the structure of species diversity and its reduction, as well as the disappearance of a number of systematic groups. It is noted that the number of zooplankton taxa increases with distance from the source of pollution (Kostomukshskoe and Kento lakes), and the average quantitative indicators also increase in this case.

Safety and Effectiveness of Highly Active Antiretroviral Therapy in Treatment-Naïve HIV Patients: Preliminary Findings of a Cohort Event Monitoring Study in Belarus.

Background And Objective: Antiretroviral drugs have well-documented evidence-based favorable benefit-risk ratios. Although various studies have investigated and characterized the safety profile of antiretroviral medicines, there are a limited number of studies evaluating the safety of first-line antiretroviral therapy (ART) in patients with a specific co-morbidity. A cohort event monitoring (CEM) study of the safety and effectiveness of antiretroviral medicines in a target population that has a significant level of co-morbidities (chronic infectious diseases, peripheral blood cytopenias) was implemented.

Magnetization boundary conditions at a ferromagnetic interface of finite thickness.

We develop a systematic approach to derive boundary conditions at an interface between two ferromagnetic materials in the continuous medium approximation. The approach treats the interface as a two-sublattice material, although the final equations connect magnetizations outside of the interface and therefore do not explicitly depend on its structure. Instead, the boundary conditions are defined in terms of some average properties of the interface, which may also have a finite thickness.

Somatic hybridization in potato: use of γ-irradiated protoplasts of Solanum pinnatisectum in genetic reconstruction.

Leaf mesophyll protoplasts of Solanum pinnatisectum (2n=24) γ-irradiated at doses of 200 Gy and consequently unable to divide were fused with untreated protoplasts of genomic chlorophyll deficient mutant IvP 841-1 (2n=24) containing the germplasms of S. tuberosum and S. phureja.