Capability assessment for application of clay mixture as barrier material for irradiated zirconium alloy structure elements long-term processing for storage during decommissioning of uranium-graphite nuclear reactors

The radionuclide composition and the activity level of the irradiated zirconium alloy E110, the radionuclide immobilization strength and the retention properties of the mixed clay barrier material with respect to the radionuclides identified in the alloy were investigated to perform the safety assessment of handling structural units of zirconium alloy used for the technological channels in uranium-graphite reactors. The irradiated zirconium alloy waste contained the following activation products:{93m}Nb and the long-lived {94}Nb, {93}Zr radionuclides. Radionuclides of {60}Co, {137}Cs, {90}Sr, and actinides were also present in the alloy. In the course of the runs no leaching of niobium and zirconium isotopes from the E110 alloy was detected. Leach rates were observed merely for {60}Co and {137}Cs present in the deposits formed on the internal surface of technological channels. The radionuclides present were effectively adsorbed by the barrier material. To ensure the localization of radionuclides in case of the radionuclide migration from the irradiated zirconium alloy into the barrier material, the sorption properties were determined of the barrier material used for creating the long-term storage point for the graphite stack from uranium-graphite reactors

Концепции электронного обучения в сфере подготовки авиационного персонала

The concepts of electronic training sold in a context of specificity of preparation of the air personnel are considered. Is shown, that the introduction of technologies of electronic training is capable to introduce innovations, not used earlier approaches to training the air personnel.Рассматриваются концепции электронного обучения, реализуемые в контексте специфики подготовки авиационного персонала. Показывается, что внедрение технологий электронного обучения способно привнести инновационные, не используемые ранее подходы к обучению авиационного персонала

Capability assessment for application of clay mixture as barrier material for irradiated zirconium alloy structure elements long-term processing for storage during decommissioning of uranium-graphite nuclear reactors

The radionuclide composition and the activity level of the irradiated zirconium alloy E110, the radionuclide immobilization strength and the retention properties of the mixed clay barrier material with respect to the radionuclides identified in the alloy were investigated to perform the safety assessment of handling structural units of zirconium alloy used for the technological channels in uranium-graphite reactors. The irradiated zirconium alloy waste contained the following activation products:{93m}Nb and the long-lived {94}Nb, {93}Zr radionuclides. Radionuclides of {60}Co, {137}Cs, {90}Sr, and actinides were also present in the alloy. In the course of the runs no leaching of niobium and zirconium isotopes from the E110 alloy was detected. Leach rates were observed merely for {60}Co and {137}Cs present in the deposits formed on the internal surface of technological channels. The radionuclides present were effectively adsorbed by the barrier material. To ensure the localization of radionuclides in case of the radionuclide migration from the irradiated zirconium alloy into the barrier material, the sorption properties were determined of the barrier material used for creating the long-term storage point for the graphite stack from uranium-graphite reactors

FEATURES OF PROJECT FINANCING OF REAL ESTATE IN THE DIGITAL ECONOMY AND ITS STATE REGULATION

The problematic issues related to investment processes in the real estate market, based on modern tools of project financing, have been considered. The Russian experience of taxation of investment entities in the Russian Federation, the experience of private-public partnership in the process of investing in real estate objects, have been studied, the problems of using project financing by real estate market entities in the conditions of digitalization have been identified. The directions of improvement of financial, economic, social and legal aspects of state regulation of project financing have been proposed in order to ensure a balance of interests of various economic entities, which as States, firms and households are considered. Modern models of real estate financing by the banking sector have been reviewed

A novel supramolecular catalytic system based on amphiphilic triphenylphosphonium bromide for the hydrolysis of phosphorus acid esters

© 2015 Elsevier B.V. The biomimetic nature of micellar catalysis can significantly affect the rate of chemical reactions due to the effects of concentration and the change of microenvironment. Here, a key role is played by the nature of the head group. The catalytic activity of alkyltriphenylphosphonium bromides (TPPB-n; n= 10, 12, 14, 16, 18; n is the number of carbon atoms in alkyl groups) in the nucleophilic substitution of p-nitrophenyl esters of alkylchloromethylphosphonic acid were investigated by the method of spectrophotometry. Using pyrene, prodan and Sudan I as probes the values of critical micelle concentrations and aggregation numbers were determined. A comparison of the results of kinetic dependence processing by Berezin equation obtained for TPPB series with the known ammonium analogues was carried out. It was found that for TPPB- n series, the higher acceleration of reaction has been achieved due to concentration factor compared to ammonium surfactants. This agrees with the fact that alkyltriphenylphosphonium bromides demonstrate higher aggregation activity forming micelles with higher solubilizing capacity

Intellectual resource for professional culture formation of a high school student-future specialist for modern production

© 2016, Econjournals. All rights reserved.The relevance of the study is reasoned by the rapid changing of requirements of society and labor market to the professional culture of personality - A future specialist as the actor of active lifestyle, competent, creative, intellectually developed professional. To achieve these requirements an important role should be given to the intellectual resources in the process of formation of university students 2019; professional culture: Knowledge; competence; personal qualities, advanced requirements of the labor market; critical thinking; ability to formulate the problem, propose a hypothesis to solve problems, to carry out generalizations and to formulate reasoned conclusions, to apply the results obtained to solve emerging problems, etc. Therefore this paper is aimed at the scientific justification of the structure and content of the intellectual resources in the formation of high school students 2019; professional culture and the development of practically-oriented algorithms for their implementation. The leading research method is the method of modeling of the structure and content of intellectual resource in the process of university students’ professional culture formation. The article reveals theoretical and methodological foundations of cultural competence approach to the design and implementation of the structure and content of an intellectual resource in the process of university students 2019; professional culture formation ([1] Concept - explication of notions, the evolution of scientific approaches; [2]the structure and content of the professional culture innovation discourse of the notion, culture forming content, technology; [3] the structure and content of the intellectual resources of the professional culture - categories, objectives, content, criteria). Paper submissions are recommended for managers and high school teachers, students of high professional education staff 2019;s qualification development and retraining centers, young scientists, post-graduates and undergraduates

Hyperbranched polyester polyacids and their binary systems with surfactants for doxorubicin encapsulation

© 2015 Elsevier B.V. Doxorubicin fixation by hyperbranched polyester polyol Boltorn H acid derivatives and their binary systems in the presence of a surfactant (Brij-35, Triton X-100) was investigated. Doxorubicin fixation degree nonlinearly depends on the number of acid groups in the polyester polyacid. Polyacid/surfactant binary systems fix up to 60% of doxorubicin from the solution

Plant species richness records in Ukrainian steppes

We compiled a list of the known maxima of vascular plant species richness in the steppe zone of Ukraine at different sampling scales (0.0001–100 m2) and compared them with the world records. Detailed information on each of the identified species-rich grassland plots is provided, including site descriptions, plot characteristics, coordinates, and species lists. Most of the small-scale records (up to 0.1 m2) were found in mesic grasslands in southern Ukraine (Kherson region) with a high abundance of annual grasses and forbs: 9 and 11 vascular plant species in 0.0001 m2 and 0.001 m2, respectively, in the steppe depression Chorna Dolyna, and 26 species in 0.1 m2 in a mesic psammophytic grassland in the Dzharylhach National Nature Park. Most of the records at larger scales were made in the northern part of the steppe zone, in forb-rich and forb-grass steppes: 15, 39, 73, and 107 species in 0.01, 1, 10, and 100 m2, respectively. All richness records were characterised by neutral to slightly alkaline sub-strates (soil pH 7.0–7.7) and low-intensity management. These characteristics are consistent with the known patterns from world records of species richness. Our inventory provides baseline knowledge for studies on the high species richness in the steppe zone and can stimulate the further investigation of identified species-rich grasslands, as well as the search for new ones. Since we did not specifically search for species-rich sites, and our dataset includes only a relatively small number of plots compared to similar studies in other regions, we expect that more species-rich vegetation will be found with further research. This study highlights the importance of steppe grasslands as global biodiversity hotspots and draws attention to their protection in the context of land-use changes and the consequences of the war in Ukraine

Design of a model of integrated support for the parents of children with disabilities via information and communication technologies

Статья посвящена проблеме психолого-педагогического сопровождения семьи ребенка с ограниченными возможностями здоровья.The article deals with the psycho-pedagogical support for the family of a child with a disability

Morbidity with tick-borne viral encephalitis in some regions in uralskiy federal district with predictive estimate of short-term epidemiologic situation

Extrapolation prediction of epidemic situation as per tick-borne viral encephalitis (TVE) on endemic territories that is based on analyzing time rows of morbidity is a promising approach to be applied in predictive medical-ecological and epidemiologic research. The authors examined long-term dynamics showing both number of people who suffered from tick bites and morbidity with tick-borne viral encephalitis (TVE) in 4 regions in the Ural Federal District over 2007–2017. We applied a sum of harmonic functions as a mathematic model; parameters of the functions were detected with Le-venberg–Marquardt procedure for non-linear estimates. The technique is flexible and it allows both to apply parameters of harmonic fluctuation that are common for all 4 regions and to estimate parameters that differ in various regions and are of special interest (average long-term values and other fluctuation parameters). One of the research goals was to estimate dynamics in number of people who suffered from tick bites and morbidity with TVE in the Ural Federal District regions over the examined period and to predict epidemiologic situation for the coming years. To do that, we built several harmonic regression models with different number of estimated parameters. To compare and rank the models, we applied Akaike consistent information criterion that determines optimality as a compromise between a model accuracy and complexity. Our analysis of morbidity with TVE over 2007–2017 in Sverdlovsk, Chelyabinsk, Tyumen, and Kurgan region allowed us to quantify discrepancies in average long-term parameters between these Ural Federal District regions. The highest average long-term morbidity was fixed in Kurgan region; the lowest one, in Sverdlovsk and Chelyabinsk region. But a number of people who suffered from tick bites was higher in Sverdlovsk, Chelyabinsk, and Tyumen region than in Kurgan region over the same period. We showed that long-term fluctuations in ticks activity in the Ural Federal District can be considered in-phase and it can possibly mean there is regional synchronization. We detected quasi-periods of cycles both for number of people bitten by ticks and morbidity with TVE and built a short-term prediction for epidemic situation as per TVE in the region on the basis of the proposed harmonic model for a period up to 2022; a probable TVE morbidity peak can be reached in 2020–2021