CHANGES IN CLADOCERAN ASSEMBLAGES FROM A SMALL ARCTIC LAKE (NENETS AUTONOMOUS OKRUG, RUSSIA)

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FIRST RECORD OF PHREATALONA PROTZI (HARTWIG, 1900) (CLADOCERA, CHYDORIDAE) IN PECHORA DELTA, NENETS AUTONOMOUS REGION, RUSSIA

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Environmental and climatic factors influencing the distribution of sub-fossil cladocerans in thermokarst lakes in northeastern Siberia, Russia

Surface sediments of thermokarst lakes along the temperature gradient were sampled in northwestern Siberia. The lakes were distributed through three environmental zones: typical tundra, southern tundra and forest-tundra, which were all situated within the continuous permafrost zone. Our investigation showed that the cladoceran communities in the lakes of the region are represented by diverse, abundant communities as reflected by the taxonomic richness and high diversity indices. The differences in the cladoceran assemblages were related to the limnological and geographical position, vegetation type, climate and water chemistry. The constrained redundancy analysis (RDA) indicated that the TJuly, water depth and both sulphate (SOf ~) and silicium (Si4*) concentrations statistically significant (p < 0.05) explained the variance in the cladoceran assemblage

Values of the modern leaders as a reflection of changes in society and requirements of management activities

Background/Objectives: Empirically examine and describe values in professional activity of leaders of organizations of different ownership forms, to compare the value orientations of leaders of public and private companies. Methods/Statistical Analysis: Authors used as known psychological methods, and specially designed diagnostic procedures and statistical methods of processing of empirical results. The first includes the comparative method as a General in the organization of research, psychodiagnostic method by I.G. Senin "The questionnaire terminal values" and T.S. Kabachenko. To the second belongs specially developed in order to assess the success of the technique of an expert estimation of activity of managers. Findings: The empirical study is characterized by the values of the modern leaders of enterprises of different ownership forms that reflect social values, organizational values, requirements of the activity. In the profile values of managers a decline in the value of creativity, self-development, education, installation analysis in the management and significant growth of material values and family sphere are noted. The differences in the values profiles of managers of organizations of different ownership forms, which are presented in the management conception and in terminal values, are determined. For leaders of private enterprises are significantly higher indicators: Financial situation, achievements, and preserve their individuality, focus on efficiency and socially-psychological methods in management. The study identified and characterized by respect values with the efficiency of management activity. They have active social contacts, maintaining their individuality, installing, macro, and innovative analysis, to the analysis of social processes, the social and psychological methods that are specific to the requirements of the activity. The study showed that management conceptions of heads of organizations are not effective. Application/Improvements: The results can be taken into account in the development of programs for prediction of professional activity Manager and also used for professional selection, counseling, training of leaders

Adenine and guanine recognition of stop codon is mediated by different N domain conformations of translation termination factor eRF1

Positioning of release factor eRF1 toward adenines and the ribose-phosphate backbone of the UAAA stop signal in the ribosomal decoding site was studied using messenger RNA (mRNA) analogs containing stop signal UAA/UAAA and a photoactivatable cross-linker at definite locations. The human eRF1 peptides cross-linked to these analogs were identified. Cross-linkers on the adenines at the 2nd, 3rd or 4th position modified eRF1 near the conserved YxCxxxF loop (positions 125–131 in the N domain), but cross-linker at the 4th position mainly modified the tripeptide 26-AAR-28. This tripeptide cross-linked also with derivatized 3′-phosphate of UAA, while the same cross-linker at the 3′-phosphate of UAAA modified both the 26–28 and 67–73 fragments. A comparison of the results with those obtained earlier with mRNA analogs bearing a similar cross-linker at the guanines indicates that positioning of eRF1 toward adenines and guanines of stop signals in the 80S termination complex is different. Molecular modeling of eRF1 in the 80S termination complex showed that eRF1 fragments neighboring guanines and adenines of stop signals are compatible with different N domain conformations of eRF1. These conformations vary by positioning of stop signal purines toward the universally conserved dipeptide 31-GT-32, which neighbors guanines but is oriented more distantly from adenines

Present-day Risk of Occasional Extreme Hydrological and Hydrogeological Events

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchive

Creation of innovative solutions for the production of composite vegetable oils balanced in fatty acid composition

The problem of imbalance of PUFA in a diet of people is investigated. It is proposed to use perspective vegetable sources of oilseeds. Considered the composition and properties of products of processing of vegetable materials of the Russian, which includes ω-3 PUFA. On this basis, the prospects for the use of PUFA in food production are determine

EFFECT OF FERROTHERAPY ON COURSE OF ISCHEMIC HEART DISEASE ASSOCIATED WITH MILD IRON DEFICIENCY IN MEN

Aim. To assess effect of ferrotherapy on course of ischemic heart disease (IHD) associated with mild iron deficiency anemia (IDA) and latent iron deficiency (ID). Material and methods. 80 male patients, coal miners, aged 51±7.9 years, were observed. 28 patients had angina pectoris associated with the mild IDA, 23 patients experienced myocardial infarction accompanied by the mild IDA and 29 patients had angina with latent ID. Latent ID was defined in case of iron plasma level ≤12 µg/l, IDA was diagnosed in case of hemoglobin level &lt;130 mg/l. The minimal hemoglobin level observed in patients was 107g/l. ICD clinical characteristics were compared before and after 3-week iron-based treatment in individualized doses. Results. Latent ID and mild IDA aggravated angina and increased ectopic myocardial activity in patients with IHD. Iron-based therapy with appropriate nutrition reduced angina attacks frequency, duration and intensity, decreased nitroglycerin consumption and increased exercise tolerance. Conclusion. Normalization of haemoglobin level and iron plasma concentration in the mild IDA as well as normalization of iron plasma concentration in ID in patients with IHD reduces ede-ma and dyspnea, decreases heart rate. These effects are provided due to the treatment with elementary iron in individualized course dose, which improves clinical status and minimizes the adverse reactions