Synthesis and Characterization of Novel Wholly Aromatic Copolyesters Based on 4'-Hydroxybiphenyl-3-Carboxylic and 3-Hydroxybenzoic Acids.

A series of new wholly aromatic (co)polyesters based on -substituted bifunctional comonomers-4'-hydroxybiphenyl-3-carboxylic (3HBCA) and 3-hydroxybenzoic (3HBA) acids with molar ratios of 3HBCA:3HBA from 0:100 to 60:40, respectively-was synthesized. NMR and FTIR spectroscopy methods proved the full compliance of the copolymer composition with the target ratio of comonomers, as well as high compositional homogeneity (absence of block sequences). The resulting copolyesters have a sufficiently high molecular weight and their intrinsic viscosity values are in the range of 0.

Bioremediation of Oil-Contaminated Soil of the Republic of Kazakhstan Using a New Biopreparation.

A new biopreparation is developed to clean soils from oil pollution in the arid climate of the Republic of Kazakhstan. The biopreparation includes bacterial strains F2-1, F2-2, and BS3701. When using the biopreparation in a liquid mineral medium with 15% crude oil, laboratory studies have revealed degradation of 48% n-alkanes and 39% of PAHs after 50 days.

[Role of protein kinases of human red cell membrane in deformability and aggregation changes].

The proteomic analysis has showed that red cell membrane contains several kinases and phosphatases. Therefore the aim of this study was to investigate the role of protein kinases of human red cell membrane in deformability and aggregation changes. Exposure of red blood cells (RBCs) to some chemical compounds led to change in the RBC microrheological properties.

Red blood cell aggregation changes are depended on its initial value: Effect of long-term drug treatment and short-term cell incubation with drug.

This study was designed to investigate whether the red cell aggregation depends on its initial level under drug therapy or cell incubation with bioactive chemical compounds. Sixty six subjects were enrolled onto this study, and sub-divided into two groups: the first group of patients (n = 36) with cerebral atherosclerosis received pentoxifylline therapy (400 mg, thrice daily) for 4 weeks. The patients of the second group were initially treated with Epoetin beta 10,000 units subcutaneously thrice a week, for 4 weeks.

[Therapeutic action of radioprotector indometofen].

The experiments on mice and dogs have shown the effectiveness of indomethofene administration after total acute radiation exposure. Introduction of indomethofene at doses of 15 and 30 mg/kg during time from 30 min to 3 days after irradiation resulted in reliable increase of mice survivability, 40-60% on average. Mice survival rate after single peroral introduction of indomethofene radioprotective doses was comparable with that resulting from referencing preparation estrofeme, which is estradiol oral dosage from (under the assumption that in contrast to indometafene estrofeme was introduced repeatedly every other day from 3 till 21 day after irradiation).