Photonics of halogenated zinc(II) and cadmium(II) dipyrromethene complexes

This article compares spectroscopic properties of the series of dipyrromethene dyes, namely their complexes of boron (III), zinc(II) and cadmium(II) with the halogenated ligands of the same structure. Absorption and emission spectra, lifetimes of long-lived emission and quantum yields of luminescence were studied as the functions of molecular structure of dipyrromethene complexes. The role of the position and nature of a substituent in a ligand, polarity of a solvent and temperature of media were also investigated. The studies demonstrate that replacing the central atom boron(III) by zinc(II) decreases the fluorescence quantum yield, indicating the increased role of non-radiative processes in excitation energy deactivations such as intersystem crossings. In addition, according to the heavy atom effect, the efficiency of intersystem crossings in halogen-substituted zinc(II) and cadmium(II) dipyrromethene complexes is higher than in the corresponding boron fluoride dipyrromethenes (BODIPY), which leads to increase in phosphorescence at low temperatures (frozen solutions). The obtained results make it possible to carry out further investigations of potential sensory properties that are required for systematic use of halogenated dipyrromethene complexes for the creation of modern optical oxygen sensors and singlet oxygen photosensitizers for photodynamic therapy or photocatalytic oxidative reactions

Phase equilibria and thermodynamic properties of oxide systems on the basis of rare earth, alkaline earth and 3d-transition (Mn, Fe, Co) metals. A short overview of

Review is dedicated studies of phase equilibria in the systems based on rare earth elements and 3d transition metals. It’s highlighted several structural families of these compounds and is shown that many were found interesting properties for practical application, such as high conductivity up to the superconducting state, magnetic properties, catalytic activity of the processes of afterburning of exhaust gases, the high mobility in the oxygen sublattice and more

Application of the Financial Industry Business Ontology (FIBO) for development of a financial organization ontology

The article considers an approach to a formalized description and meaning harmonization for financial terms and means of semantic modeling. Ontologies for the semantic models are described with the help of special languages developed for the Semantic Web. Results of FIBO application to solution of different tasks in the Russian financial sector are given

Investigation of Prince M. P. Gagarin’s Case in Context of Development of State Control System in First Quarter of 18th Century

The article investigates the activities of Prince Matvey Petrovich Gagarin as the first governor of Siberia. The materials of his investigation case are examined in the context of the development of the state control system over the actions of government authorities during the reign of Peter I. The process of creating legislation and special controlling and judicial bodies aimed at regulating the limits of powers of civil servants, identifying and preventing their violations, is characterized. The study is based on the analysis of legislative sources regulating the organization of new administrative-territorial divisions. A number of documentary sources from the Russian State Archive of Ancient Acts are analyzed, including cases from the Siberian Office, orders from Governor M. P. Gagarin, reports from commanders of Siberian cities, petitions from various individuals, and other materials. It is shown that the organization of investigative measures and the criminal case process against Prince M. P. Gagarin were under the personal control of Peter I. The conclusion is drawn that Prince M. P. Gagarin was an active participant in many reforms initiated by the reformist tsar. At the same time, it is demonstrated that Prince Gagarin’s biography is a vivid example of the collision between the widespread practice of enrichment by aristocratic clans and Peter I’s principles and views on the essence and place of official service in his “regular” police state

Establishment of educational electronic publications as one of the strategic directions of improving the quality of training graduates

Качество обучения зависит от совершенства учебного материала, формы его представления и организации учебного процесса. В традиционной схеме обучения возникает множество проблем, связанных с постоянно возрастающим потоком информации, усложнением знаний, отсутствием иллюстрационного материала. Внедрение компьютера в учебный процесс дает возможность создать богатый справочный и иллюстративный материал в самом разнообразном виде.The quality of training depends on the excellence of educational material, its presentation and organization of educational process. In the traditional scheme of education face many challenges with a constantly increasing flow of information, complexity of knowledge, lack of illustrative material. The introduction of the computer in the learning process makes it possible to create a rich background and illustrative material in the most diverse form

Metal-free transannulation reaction of indoles with nitrostyrenes: a simple practical synthesis of 3-substituted 2-quinolones

3-Substituted 2-quinolones are obtained via a novel, metal-free transannulation reaction of 2-substituted indoles with 2-nitroalkenes in polyphosphoric acid. The reaction can be used in conjunction with the Fisher indole synthesis offering a practical three-component heteroannulation methodology to produce 2-quinolones from arylhydrazines, 2-nitroalkenes and acetophenone

Preparation, crystal structure and properties of HoBaCo 2-xFexO5+δ

A series of samples of overall composition HoBaCo2-xFe xO5+δ with 0.0 ≤ x ≤ 0.8 were prepared by glycerin nitrate technique in air and in pure oxygen. Irrespective of atmosphere used the homogeneity range of single phase iron substituted holmium barium cobaltate was proved to exist within the range 0.0 ≤ x ≤ 0.4. All samples prepared in air and samples within the compositional range 0.2 ≤ x ≤ 0.4 obtained in oxygen possess tetragonal ap × ap × 2ap (sp. gr. 4/mmm) structure. HoBaCo2O 5+δ and HoBaCo1.9Fe0.1O 5+δ synthesized in oxygen crystallized in orthorhombic a p × 2ap × 2ap (sp. gr. mmm) structure. The structural parameters were refined by the Rietveld analysis. It was shown that parameter a remains practically constant while parameter c gradually increases with the increase of iron content. The changes of oxygen content in HoBaCo2-xFexO5+δ (x = 0, 0.2, 0.4) were measured by TGA within the temperature range 25-1100 °C in air. The absolute value of oxygen content was determined by the reduction of the samples in hydrogen flow. The influence of oxygen and iron content on the crystal structure has been discussed. The chemical stability of HoBaCo 2-xFexO5+δ in contact with the solid electrolyte materials Ce0.8Sm0.2O2 and Zr 0.85Y0.15O2 was examined. © 2013 Elsevier Ltd

Frequency and structure of endocrine diseases in young elite athletes

There is no data on the prevalence of endocrine disorders in young elite athletes in Russia.Objective: to assess the prevalence of endocrine pathologies and their structure in children and adolescents involved in elite sport.Materials and methods: the study included data from outpatient records of members of national sports teams, who underwent special medical examination. The data of a random sample of 1081 outpatient cards of young athletes, for 26 sports, were analyzed.Results: we found a high prevalence of endocrine pathology (18.6 %) in children and adolescents involved in high-performance sports. Thyroid diseases are most the most frequent in young athletes (in 57.3 % of cases). On second place is obesity (12.3 %). The frequency of weight deficiency and short stature is 8.4 % each. Autoimmune thyroiditis occupies a leading place in the structure of thyroid pathology in young elite athletes. Subclinical hypothyroidism takes the second place, and nodular goiter — the third place.Conclusion: young elite athletes are characterized by a high frequency of endocrine pathology, the leading place in which is occupied by thyroid diseases. It is necessary to further studies aimed at assessing the mechanisms of hormonal adaptation in elite young athletes to assess their impact on the development of the child and the correct interpretation of the hormonal profile obtained during a special medical examination

Parameters of blood pressure during stress test in young elite athletes

It is known that in children at rest, BP values depend on height, but this aspect is not taken into account when analyzing the maximum BP during exercise.Objective: to determine the maximum value of BP in young elite athletes, depending on height and gender.Materials and methods: 2313 (age 15.5 ± 1.4 years, 45% of young men) young elite athletes, members of national teams of the Russian Federation in 40 sports, were examined. All subjects underwent bicycle ergometry according to the PWC170 protocol, blood pressure was measured manually at each stage of the load, and its maximum values were determined during the entire test.Results: The maximum BP values in boys were higher than in girls: systolic blood pressure (SBP) 195 ± 25 vs 175 ± 20 mmHg, p < 0.001, diastolic blood pressure (DBP) 80 ± 11 vs 80 ± 10 mm Hg, p < 0.05. A relationship was found between the maximum value of blood pressure on load and growth (r = 0.55; p < 0.001). Normative tables are proposed for assessing the maximum values of SBP and load, depending on growth.Conclusion: In young elite athletes, the maximum BP value during VEM according to the PWC170 protocol depends not only on gender, but also on height. The maximum values of SBP during exercise in tall young elite athletes can reach 250 mm Hg in boys and 210 mm Hg in girls