The effect of COVID-19 on labour migration in the CIS

This study responds to the need for measures to mitigate the effects of national actions to slow the spread of COVID-19. National responses are dynamic processes and thus an elusive, albeit important, object of study. The governments of most CIS countries acted promptly and decisively in countering the pandemic. The comprehensive measures have had a serious impact on citizens’ mobility and employment situation. Among the affected are millions of migrants working in the CIS. This article offers a comparative analysis, followed by synthesis, of the negative effects of the COVID-19 pandemic as seen through the prism of employment and the situation of migrant workers in the CIS. Another focus is the restriction and support measures and how they have affected migrants. A range of qualitative and quantitative data was collated on the situation of migrant workers during COVID-19 restriction in the Russian Federation and across the CIS. The findings suggest that the lack of international coordination in tackling COVID-19 has complicated the situation of migrant workers, who suffer from the closure of borders and the absence of adequate social support. The article explores problems faced by migrant workers in the current crisis and proposes measures to alleviate them

Fodder productivity and digestible energy value of oat (<i>Avena sativa</i> L.) cultivars and breeding lines under the conditions of the Northern Trans-Urals

Background. Spring oats play an essential role in the search for a comprehensive solution of urgent problems associated with the development of a solid fodder resource base that could meet the need of animal husbandry for high-quality feeds. Adequate animal feeding is possible when high-quality fodders are available and the rations are well balanced in basic nutrients.   Materials and methods. Field studies were conducted in Tyumen Province on the experimental field of the Research Institute of Agriculture for the Northern Trans-Ural Region in 2016–2023. The tested materials included spring oat cultivars and breeding lines, with cv. ʻTalismanʼ serving as the reference. Productivity was assessed according to the harvested dry matter, crude and digestible protein, crude and digestible fat, crude and digestible fiber, and crude and digestible nitrogen-free extracts (NFE). To do this, the yield of green biomass in the phase of milky ripeness was taken into account, and the contents of dry matter and nutrients in it were measured.   Results. Promising breeding lines were evaluated for their fodder productivity (green biomass yield and the collected dry matter, protein, fat, fiber, and NFE). Digestible energy value of the tested oats was calculated in feed units (FU) and in joules of metabolizable energy (ME) and gross energy (GE). Energy digestibility (ED) and concentrations of digestible energy (DE) andmetabolizable energy (ME) were measured.   Conclusion. Cvs. ʻTobolyakʼ, ʻRaduzhnyʼ and ʻSiriusʼ were the best in fodder productivity. Cvs. ʻMegionʼ, ʻOtradaʼ, ʻFomaʼ, ʻTobolyakʼ, and line TM 07-95-16 were identified for the highest digestible energy value. They provided 0.85–0.86 FU per 1 kg of dry matter and formed 835.5–842.5 kJ of ME and 1708.1–1734.6 kJ of GE per 100 kg of dry matter. Their ED was 63.5–65.8 %, with 1092.87–1141.36 kJ/kg of DE and 896.15–935.91 kJ/kg of ME

Distinctive features of administrative and legal support of national security in the USA and Russia: conceptual foundations

This article is devoted to a comparative analysis of the experience of strategic administrative and legal regulation and ensuring national security in the US and Russia. It is established and systematized the distinctive features of the Western (North American) and Eastern (Russian) approaches to the issues of strategic planning and development of policy documents in this are

Study of the process e+e−→ppˉe^+e^-\to p\bar{p} in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector

Using a data sample of 6.8 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider we select about 2700 events of the $e^+e^- \to p\bar{p}$ process and measure its cross section at 12 energy ponts with about 6\% systematic uncertainty. From the angular distribution of produced nucleons we obtain the ratio $|G_{E}/G_{M}| = 1.49 \pm 0.23 \pm 0.30$

Measurement of the e+e−→K+K−π+π−e^+e^- \to K^+K^-\pi^+\pi^- cross section with the CMD-3 detector at the VEPP-2000 collider

The process $e^+e^- \to K^+K^-\pi^+\pi^-$ has been studied in the center-of-mass energy range from 1500 to 2000\,MeV using a data sample of 23 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. Using about 24000 selected events, the $e^+e^- \to K^+K^-\pi^+\pi^-$ cross section has been measured with a systematic uncertainty decreasing from 11.7\% at 1500-1600\,MeV to 6.1\% above 1800\,MeV. A preliminary study of $K^+K^-\pi^+\pi^-$ production dynamics has been performed

Allelic state of prolamin-coding loci in the new oat cultivar ‘Tobolyak’

Background. In order to fully reveal the advantages of a cultivar and use it effectively in production, it is necessary to ensure high sowing and varietal qualities of seeds, which requires improvement in breeding and seed production. Biotechnological methods are increasingly used in initial seed production. High efficiency was shown by the method of electrophoresis of seed storage proteins – prolamins. The aim of this study was to assess the biotype composition and allelic state of the prolamin-coding loci in the new spring oat cultivar ‘Tobolyak’ for its further use in initial seed production.Materials and methods. In 2021, 1519 families of cv. ‘Tobolyak’ were studied using the method of native electrophoresis. Three grains from each family were selected for analyses by random sampling. Electrophoresis was carried out in vertical plates of 13.2% polyacrylamide gel at a constant voltage of 500 V for 4.5–5.0 hours.Results and conclusion. The study of cv. ‘Tobolyak’ families resulted in identifying 13 types of avenin patterns with a frequency of occurrence from 96.36 to 0.07%. A new block of avenin components controlled by the allele of the Avn B locus was described. Number 8 was assigned to this block. It was established that cv. ‘Tobolyak’ had been developed by crossing a minor biotype of cv. ‘Taezhnik’ (Avn 4.4.2) with the first biotype of cv. ‘Orion’ (Avn 2.8.2). The basis of cv. ‘Tobolyak’ was one genotype with the Avn 4.8.2 avenin formula. The remaining biotypes arose as a result of crossing the biotypes of cvs. ‘Taezhnik’ and ‘Orion’ as well as through mechanical contamination. To maintain the genetic stability of cv. ‘Tobolyak’, it is recommended to use only families of the first biotype in the process of original seed production

Collective Modes of Tri-Nuclear Molecules

A geometrical model for tri-nuclear molecules is presented. An analytical solution is obtained provided the nuclei, which are taken to be prolately deformed, are connected in line to each other. Furthermore, the tri-nuclear molecule is composed of two heavy and one light cluster, the later sandwiched between the two heavy clusters. A basis is constructed in which Hamiltonians of more general configurations can be diagonalized. In the calculation of the interaction between the clusters higher multipole deformations are taken into account, including the hexadecupole one. A repulsive nuclear core is introduced in the potential in order to insure a quasi-stable configuration of the system. The model is applied to three nuclear molecules, namely $^{96}$Sr + $^{10}$Be + $^{146}$Ba, $^{108}$Mo + $^{10}$Be + $^{134}$Te and $^{112}$Ru + $^{10}$Be + $^{130}$Sn.Comment: 24 pages, 9 figure

Measurement of the Pion Form Factor in the Energy Range 1.04-1.38 GeV with the CMD-2 Detector

The cross section for the process $e^+e^-\to\pi^+\pi^-$ is measured in the c.m. energy range 1.04-1.38 GeV from 995 000 selected collinear events including 860000 $e^+e^-$ events, 82000 $\mu^+\mu^-$ events, and 33000 $\pi^+\pi^-$ events. The systematic and statistical errors of measuring the pion form factor are equal to 1.2-4.2 and 5-13%, respectively.Comment: 5 pages, 2 figure