Quantum Equivalence of Massive Antisymmetric Tensor Field Models in Curved Space

We study the effective actions for massive rank-2 and rank-3 antisymmetric tensor field models in curved space-time. These models are classically equivalent to massive vector field and massive scalar field with minimal coupling to gravity respectively. We prove that effective action for massive rank-2 antisymmetric tensor field is exactly equal to one for massive vector field and effective action for massive rank-3 antisymmetric tensor field is exactly equal to one for massive scalar field. Prove is based on an identity for mass-dependent zeta-functions associated with Laplacians acting on $p$-forms.Comment: 8 pages, REVTeX fil

Особливості перекладу адвербіальних дієслів руху

Проаналізовано парадигматичні та синтагматичні характеристики адвербіальних дієслів руху. Встановленно розходження при перекладі дієслів з експліцитною й імпліцитною семою руху. Переклад на рівні варіантних відповідників домінує при передачі дієслів з експліцитною семою; переклад на рівні контекстуальних замін притаманний дієсловам з імпліцитною семою. Paradigmatic and syntagmatic properties of adverbial verbs of motion were analysed. Differences in conveying verbs with explicit and implicit semes of motion were established. Translation on the level of variational correspondences is predominant when rendering verbs with explicit seme; translation on the level of contextual substitutions is typical of verbs with implicit seme

Forecasting of the After-Effects of A(H7N9) Modelled Outbreak in the Territory of the Russian Federation

Objective of the study is to evaluate economic losses in the consequence of A(H7N9) virus emergence in the territory of the Russian Federation. Materials and methods. Economic damage from induced fatalities has been predicted using DALY index, taking into account the life loss, depending upon the age of the infected persons and associated amount of short-received gross domestic product (GDP). Results and conclusions. Since nowadays there are reported cases of the disease in China, one should expect individual cases of flu among those, arriving in the Russian Federation from this country. Economic loss is forecasted for the outbreak involving infection of two individuals with A(H7N9) virus; the age of the first patient is over 50, and the outcome of his disease will be lethal. Treatment expenses for two patients may come up to 10.9-21.8 thousand rubles, and economic impact from short-received GDP - up to 3900 thousand rubles

Analysis of the Impact Consequent to the Emergence of Imported Ebola Virus Disease Cases in the Russian Federation

Objective of the study was to forecast the scale of the outbreak that would emerge after arrival of persons infected with Ebola virus into the Russian Federation. Initial data for the prediction were obtained from retrospective analysis of hemorrhagic Ebola fever outbreaks registered within the period of 1976-2014, and the spread of the virus in the Republic of Guinea and Mali in 2014. Delays in the identification of a patient and the lack of compliance with control measures may result in secondary disease in 3-5 persons from among the members of the family and the medical staff. Timely diagnostics and strict observance of safety regulations for treatment of patients with fever of unknown etiology will minimize the number of secondary diseases to a single case or none at all

A theoretical study of the structural phases of Group 5B - 6B metals and their transport properties

In order to predict the stable and metastable phases of the bcc metals in the block of the Periodic Table defined by groups 5B to 6B and periods 4 to 6, as well as the structure dependence of their transport properties, we have performed full potential computations of the total energies per unit cell as a function of the c/a ratio at constant experimental volume. In all cases, a metastable body centered tetragonal (bct) phase was predicted from the calculations. The total energy differences between the calculated stable and metastable phases ranged from 0.09 eV/cell (vanadium) to 0.39 eV/cell (tungsten). The trends in resistivity as a function of structure and atomic number are discussed in terms of a model of electron transport in metals. Theoretical calculations of the electrical resistivity and other transport properties show that bct phases derived from group 5B elements are more conductive than the corresponding bcc phases, while bct phases formed from group 6B elements are less conductive than the corresponding bcc phases. Special attention is paid to the phases of tantalum where we show that the frequently observed beta phase is not a simple tetragonal distortion of bcc tantalum

The managerial mechanism of future competitive technical specialists vocational training: The Russian experience

© 2016, Econjournals. All rights reserved.The relevance of the paper is reasoned by the search for adequate mechanisms to manage vocational training of future competitive technical specialists. Modern economies demand the training of technical specialists’ new generation ready to project and engineering, production and technological, organizational and management, science and research, service and operational professional activities, as well as the fulfillment of skilled work using modern equipment for the developed technological process. One of the variants of the organization of vocational training of future competitive technical specialists is based on the integration of educational curricula of different levels (primary, secondary and high). The purpose of the paper is to develop a managerial mechanism for future competitive technical specialists’ training based on the integration of educational curricula at different levels (primary, secondary and high). The leading method is the method of action research, allowing obtain new knowledge on the managerial mechanism for vocational training of specialists, capable of a certain type of practical activities, self-organization and competitiveness on the labor market through the integration of primary, secondary and high levels of educational curricula. The article defines the essence of integrated educational curricula of primary, secondary and high levels of vocational training; it justifies the organization of control and assessment procedures of students’ vocational training through the integration of educational curricula at different levels; proposes an algorithm of students’ selection to study on integrated educational curricula. Paper Submissions can be useful for research and teaching staff of technical specialists’ vocational training system, experts of training and retraining centers in the training content’s selection and structuring of research universities’ scientific and pedagogical staff development

THE ROLE OF MESOZOIC GEODYNAMIC EVENTS IN FORMATION OF SEDIMENTARY BASINS ON THE FRAMING OF THE EASTERN MONGOL-OKHOTSK OROGENIC BELT

The Mongol-Okhotsk orogenic belt, finally formed in the end of the Mesozoic as a result of later tectonic events, is divided into two flanks: western and eastern. Its formation is obviously due to a regular change in geodynamic events significantly obscured by late tectonic and magmatic processes in the western flank and more clearly defined in the eastern flank from both magmatic and stratified formations. The early changes in geodynamic environment are most clearly determined by the formation of magmatic complexes whose completion is usually accompanied by the strata formation. Stratons framing the eastern flank of the Mongol-Okhotsk orogenic belt in the Mesozoic were formed in sedimentary basins, which are currently isolated to the Krestovkinsky and Ogodzhinsky basins along the southern border and to the Strelkinsky, Malotyndinsky, Toromsky and Udsky basins along the northern border. The deposition environment varied from deep-sea marine to continental. The article attempts to correlate the cross-sections of sedimentary basins on the framing of the eastern Mongol-Okhotsk orogenic belt and considers similarity or difference in their structure, conditions of sedimentation, tectonic positions and dependence of their evolution on geodynamic processes in the regio

Forecasting of the Socio-Economic Damage Resulting from Outbreaks of Infectious Diseases, by the Example of Crimean Hemorrhagic Fever

Objective of the study was to develop a method of assessment and forecasting of socio-economic damage inflicted by the outbreaks of infectious diseases using DALY index by the example of Crimean hemorrhagic fever. WHO expert-designed DALY index was adapted for use in the territory of the Russian Federation with due account of GDP values and age distribution among the population. Put forward was a scheme for prognostication of a possible social damage caused by infectious disease outbreak, expressed in the aggregate number of wasted years of productive life and economic loss resulted from GDP decrement. The method developed can be used for forecasting of socio-economic damage inflicted by the outbreaks of infectious diseases and evaluation of effectiveness as regards anti-epidemic and therapeutic interventions. Carried out has been assessment of economic and social losses which resulted from outbreaks of Crimean hemorrhagic fever in the Southern Federal District of Russia inclusive of the data on morbidity rates over the period of 1999-2010. Major economic damage is factored by the labor forces loss consequent to fatal cases of infection. Such a method of prognostication based on DALY index has been implemented in the territory of the Russian Federation for the first time ever

Synthesis, structure, and visible-light-driven activity of o-YbFeO3/h-YbFeO3/CeO2 photocatalysts

Received: 29.09.2021. Revised: 27.11.2021. Accepted: 30.11.2021. Available online: 02.12.2021.Photo-Fenton-like oxidation of organic substances is one of the key advanced oxidation processes based on the reversible Fe2+↔Fe3+ transition and the generation of a strong oxidant ·OH in the presence of H2O2 and is currently considered as a promising method for the purification of polluted aqueous media. However, the absence of effective and stable photocatalysts of this process, operating under the action of visible light, necessitates the exploratory studies, mainly among iron oxides and ferrites of various compositions and structures. In this work, using the method of solution combustion followed by heat treatment in air the heterojunction nanocomposites based on ytterbium orthoferrite and cerium dioxide of the composition o-YbFeO3/h-YbFeO3/CeO2 (0–20 mol.%) with high absorption in the visible region and advanced photo-Fentonlike activity were obtained. The nanocomposites were studied by EDS, SEM, XRD, BET, and DRS methods. The photo-Fenton-like activity of the nanocomposites was investigated during the degradation of methyl violet under the action of visible (λmax = 410 nm) radiation. As a result, the formation of I-type heterojunction based on stable rhombic (55.4–79.0 nm) and metastable hexagonal (19.5–24.0 nm) modifications of ytterbium orthoferrite (o-YbFeO3 and h-YbFeO3, respectively) and cubic cerium dioxide CeO2 (13.2–19.2 nm) nanocrystals was established. It was shown that the obtained nanocomposites had foamy morphology and were characterized by a specific surface in the range of 9.1–25.0 m2/g, depending on the CeO2 content. It was found that nanocrystalline components were chemically and phase-pure, uniformly spatially distributed over the nanocomposite, and had multiple contacts with each other. Based on this fact and the established electronic structure of the nanocomposite components, the formation of I-type heterojunction with the participation of o-YbFeO3 (Eg = 2.15 eV), h-YbFeO3 (Eg = 2.08 eV), and CeO2 (Eg = 2.38 eV) was shown, the presence of which increased photocatalytic activity of the resulting nanocomposite. The optimal content of CeO2 in the nanocomposite was 5%, and the o-YbFeO3/h-YbFeO3/CeO2–5% sample was characterized by the highest rate constant of photo-Fenton-like degradation of methyl violet under the action of visible light equal to k = 0.138 min–1, which was 2.5 to 5 times higher than for nanocomposites based on ytterbium orthoferrite. The obtained results obtained indicate that the developed nanocomposites can be considered as a promising basis for the advanced oxidation processes for the purification of aqueous media from organic pollutants.This work is supported by the Grant of President of the Rus-sian Federation МК-795.2021.1.3. The XRD, SEM, and EDS studies were performed on the equipment of the Engineer-ing Center of Saint Petersburg State Institute of Technology

Live Birth of a Healthy Child in a Couple with Identical mtDNA Carrying a Pathogenic c.471_477delTTTAAAAinsG Variant in the MOCS2 Gene.

Molybdenum cofactor deficiency type B (MOCODB; #252160) is an autosomal recessive metabolic disorder that has only been described in 37 affected patients. In this report, we describe the presence of an in-frame homozygous variant (c.471_477delTTTAAAAinsG) in the MOCS2 gene in an affected child, diagnosed with Ohtahara syndrome according to the clinical manifestations. The analysis of the three-dimensional structure of the protein and the amino acid substitutions suggested the pathogenicity of this mutation. To prevent transmitting this mutation to the next generation, we used preimplantation genetic testing for the monogenic disorders (PGT-M) protocol to select MOCS2 gene mutant-free embryos for transfer in an in vitro fertilization (IVF) program. As a result, a healthy child was born. Interestingly, both parents of the proband shared an identical mitochondrial (mt) DNA control region, assuming their close relationship and thus suggesting that both copies of the nuclear rare variant c.471_477delTTTAAAAinsG may have been transmitted from the same female ancestor. Our estimation of the a priori probability of meeting individuals with the same mtDNA haplotype confirms the assumption of a possible distant maternal relationship among the proband's direct relatives