Time-dependent density functional theory study of the luminescence of 2-aminopyrimidine derivative

The research was supported by Russian Foundation for Basic Research and the government of the Novosibirsk region of the Russian Federation, grant № 18–43–540016 r_a

Application of parallel calculations in large scale optimization problems

Chuhai A. M. Application of parallel calculations in large scale optimization problems / A. M. Chuhai, S. B. Shekhovtsov, Rogelio Corrales Diaz // Протидія кіберзагрозам та торгівлі людьми: зб. матеріалів Міжнар. наук.-практ. конф. (м. Харків, 26 листоп. 2019 р.) / МВС України, Харків. нац. ун-т внутр. справ ; Координатор проектів ОБСЄ в Україні. – Харків : ХНУВС, 2019. – С. 273-274.У тезах доповіді аналізується застосування паралельних обчислень та проблеми великомасштабної оптимізації.The thesis of the report analyzes the application of parallel computing and large-scale optimization problems.В тезисах доклада анализируется применение параллельных вычислений и проблемы крупномасштабной оптимизации

Silver(I) coordination compounds with polydentate pyrimidine ligands: thermochromism of luminescence

The main goal of this work is to study how the substituent in position 2 of the pyrimidine ring affects both luminescent properties and structures of silver(I) complexes. A series of coordination compounds, [AgL1NO3], [AgL1X]n, [Ag2(L2)2X2] (X = I, Br, Cl–), [AgL1(PPh3)Y] (Y = CF3SO3, BF4, NO3), [AgL3NO3·CH3CN]n, have been synthesized and structurally characterized. According to the X-ray single data, the complexes [AgL1NO3], [AgL1(PPh3)Y] adopt mononuclear structures; the complexes [Ag2(L2)2X2] are binuclear; [AgL1X]n and [AgL3NO3·CH3CN]n are polymeric compounds.The research was supported by the President of the Russian Federation Grant for young scientists МК-1219.2020.3; by Russian Foundation for Basic Research and the government of the Novosibirsk region of the Russian Federation, grant № 18–43–540016 r_a

Temperature and excitation wavelength dependent emission of silver(I) complexes with an aminopyrimidine ligand

The research was supported by the President of the Russian Federation Grant for young scientists МК-1219.2020.3; by Russian Foundation for Basic Research and the government of the Novosibirsk region of the Russian Federation, grant № 18–43–540016 r_a

Morphotypes and genetic diversity of <i>Dendrobaena schmidti</i> (Lumbricidae, Annelida)

Dendrobaena schmidti (Michaelsen, 1907) is a polymorphic earthworm species from the Caucasus and adjacent regions. Adult D. schmidti individuals have highly variable body size (from 1.5 to well over 10 cm) and color (from dark purple to total lack of pigmentation), so a lot of subspecies of D. schmidti have been described; however, the existence of most of them is currently under dispute. We studied the genetic diversity of D. schmidti from seven locations from the Western Caucasus using mitochondrial (a fragment of the cytochrome oxidase I gene) and nuclear (internal ribosomal transcribed spacer 2) DNA. For both genes studied, we found that our sample was split into two groups. The first group included somewhat bigger (3-7.5 cm) individuals that were only slightly pigmented or totally unpigmented (when fixed by ethanol). The second group contained small (1.7-3.5 cm) specimens with dark purple pigmentation. In one of the studied locations these two groups were found in sympatry. However, there were no absolute differences either in general appearance (pigmented/unpigmented, small/big) or among diagnostic characters. Although the two groups differed in size (the majority of individuals from the first group were 5-6 cm long, and of the second one, 2-3 cm), the studied samples overlapped to a certain degree. Pigmentation, despite apparent differences, was also unreliable, since it was heavily affected by fixation of the specimens. Thus, based on the obtained data we can conclude that D. schmidti consists of at least two species that have identical states of diagnostic characters, but differ in general appearance

Rethinking “democratic backsliding” in Central and Eastern Europe – looking beyond Hungary and Poland

This essay introduces contributions to a special issue of East European Politics on “Rethinking democratic backsliding in Central and Eastern Europe”, which seeks to expand the study of democratic regression in CEE beyond the paradigmatic cases of Hungary and Poland. Reviewing these contributions, we identify several directions for research: 1) the need to critique “democratic backsliding”, not simply as a label, but also as an assumed regional trend; 2) a need to better integrate the role of illiberal socio-economic structures such as oligarchical structures or corrupt networks; and 3) a need to (re-)examine the trade-offs between democratic stability and democratic quality. We also note how insights developed researching post-communist regions such as Western Balkans or the post-Soviet space could usefully inform work on CEE backsliding. We conclude by calling for the study of CEE democracy to become more genuinely interdisciplinary, moving beyond some narrowly institutionalist comparative political science assumptions

Discovery of the 151^{151}Eu α\alpha decay

We report on the first compelling observation of $\alpha$ decay of $^{151}$Eu to the ground state of $^{147}$Pm. The measurement was performed using a 6.15 g Li$_6$Eu(BO$_3$)$_3$ crystal operated as a scintillating bolometer. The Q-value and half-life measured are: Q = 1948.9$\pm 6.9(stat.) \pm 5.1(syst.)$ keV, and T$_{1/2}=\left( 4.62\pm0.95(stat.)\pm0.68(syst.)\right) \times 10^{18}$ y . The half-life prediction of nuclear theory using the Coulomb and proximity potential model are in good agreement with this experimental result

Дирофиляриоз: двухстороннее поражение плевры в сочетании с паразитарной пневмонией под маской туберкулеза

The article describes a rare clinical case of pulmonary dirofilariasis (caused by Dirofilaria repens) manifesting as a combination of bilateral pleural lesions with recurrent exudative pleurisy and parasitic pneumonia mimicking tuberculosis. Based on published data, the pathogenetic mechanisms of the disease development and its specific course are described.Представлено редкое клиническое наблюдение легочного дирофиляриоза (возбудитель Dirofilaria repens), проявляющегося сочетанием двухстороннего поражения плевры с рецидивирующим экссудативным плевритом и паразитарной пневмонией, протекающих под маской туберкулезного процесса. По данным литературы описаны патогенетические механизмы формирования болезни и особенности течения