The essential oil composition of aerial parts of Artemisia austriaca Jacq. from three accessions of Northern Kazakhstan

In the flora of Kazakhstan there are many medicinal plants, of which the genus Artemisia (Asteraceae) includes 81 species. In the current study, chemical composition of essential oil from aerial parts of Artemisia austriaca Jacq. collected from different sites of Northern Kazakhstan was determined using GC-MS analysis. The chemical analysis demonstrated that the oil was dominated by oxygenated monoterpenes amounting to 39.49-59.20% with camphor (7.03-20.52%), 1,8-cineole (8.95-13.55%), α-thujone (3.16-25.78%) and β-thujone (0.87-9.92%) as major constituents. The results also suggested that there was difference in composition as well as amount among different sites depending on pH and organic matter of the soil. Further chemometric analysis using hierarchical cluster analysis (HCA) of A. austriaca essential oil compositions from the published literature as well as the composition from present study were used in order to demonstrate geographical variations in the composition of the essential oils. It showed the existence of two main clusters: mixture of α- and β-thujones (32.5±21.6%) / 1,8-cineole (13.9±7.8%) (Cluster I) and camphor (40.5±17.4%) / 1,8-cineole (19.4±9.5%) (Cluster II)

Source for In Situ Positron Annihilation Spectroscopy of Thermal-And Hydrogen-Induced Defects Based on the Cu-64 Isotope

This work aims to investigate the 64Cu isotope applicability for positron annihilation experiments in in situ mode. We determined appropriate characteristics of this isotope for defect studies and implemented them under aggressive conditions (i.e., elevated temperature, hydrogen environment) in situ to determine the sensitivity of this approach to thermal vacancies and hydrogen-induced defects investigation. Titanium samples were used as test materials. The source was obtained by the activation of copper foil in the thermal neutron flux of a research nuclear reactor. Main spectrometric characteristics (e.g., the total number of counts, fraction of good signals, peak-to-noise ratio) of this source, as well as line-shaped parameters of the Doppler broadening spectrum (DBS), were studied experimentally. These characteristics for 64Cu (in contrast to positron sources with longer half-life) were shown to vary strongly with time, owing to the rapidly changing activity. These changes are predictable and should be considered in the analysis of experimental data to reveal information about the defect structure. The investigation of samples with a controlled density of defects revealed the suitability of 64Cu positron source with an activity of 2-40 MBq for defects studies by DBS. However, greater isotope activity could also be applied. The results of testing this source at high temperatures and in hydrogen atmosphere showed its suitability to thermal vacancies and hydrogen-induced defects studies in situ. The greatest changes in the defect structure of titanium alloy during high-temperature hydrogen saturation occurred at the cooling stage, when the formation of hydrides began, and were associated with an increase in the dislocation density

EXPERIMENTAL INVESTIGATION ON INTERACTION OF INTENSIVE LASER RADIATION WITH DROP AEROSOL IN CONDITION OF EXPLOSIVE PARTICLE EVAPORATION

The aim of the work is to obtain the quantitative connection between characteristics of the explosive evaporation process in the liquid-drop aerosol in the laser radiation field and parameters of the radiation and particles. The determination of the explosion process characteristics according to the measurements of the optic subsequences and acoustic response of the particle explosion has been performed. The dependence of the explosive boiling process and particle damage characteristics upon the energetical parameters of the laser radiation and aerosol particle size has been obtained. The new procedures on the diagnostics of the intensive laser beam and aerosol parameters have been developed on base of the obtained dependencesAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

Preventive impact on corruption in the Republic of Kazakhstan: review of the commentary to the law of the Republic of Kazakhstan «on combating corruption»

Objective evaluation of the Commentary to the Law of the Republic of Kazakhstan quotOn combating corruptionquot prepared by a group of authors under the scientific editorship of Doctor of Law N. N. Turetskiy and the assessment of preventative impact on corrupt behaviour in that state based on the the Commentary. Methods universal dialectical method of scientific cognition of social phenomena and processes with application of general scientific methods analysis synthesis comparison used in the modern law. Results the paper gives a positive assessment of the Commentary to the Law of the Republic of Kazakhstan quotOn combating corruptionquot prepared by a group of authors under the scientific editorship of Doctor of Law N. N. Turetskiy. The tools and mechanisms of preventive impact on corrupt behaviour in the Republic of Kazakhstan are examined and some measures on the improvement of tools and mechanisms for combating corruption in the Russian Federation are suggested with the account of experience accumulated by Kazakhstan specialists

Variations of the total electronic concentration in the ionosphere in seismically active region

In this work we studied the variations in the total electron concentration (TEC) obtained from measurements of the global navigation system GPS in the preparation zone for the 2010 catastrophic Chilean earthquake (Mw = 8.8) under calm background conditions at a minimum of 24 solar activity (SA) cycles. The analysis of the geodynamic activity and ionospheric TEC disturbances in the seismically active region of this catastrophic earthquake is carried out. A computational technique has been developed that can be used to study TEC variations over seismically active regions