New lichen records from the Novgorod Region, Russia

Twenty lichen species are reported as new to the Novgorod Region (Russia) from Valdaysky National Park and Rdeysky Nature Reserve. Pyrenula chlorospila is recorded for the first time for European Russia outside Caucasus. Acrocordia cavata, Pertusaria coccodes, Rostania occultata and Scytinium subtile are recommended to be included in the Red Data Book of the Novgorod Region.

Formation of a Culture of Life Safety is the Basis of Healthy Growing up of Young People

Целью исследования является изучение формирования культуры безопасности жизнедеятельности как основы взросления молодежи. Использованы методы: анализ теоретических источников, статистических данных, сравнительный анализ. Раскрыты понятия «культура безопасности жизнедеятельности», «информирование» и «современные риски». Описаны преимущества информирования молодежи о современных рисках для непрерывного формирования культуры безопасности жизнедеятельности. Выявлено, что отсутствие программ воспитания в средних профессиональных учреждениях с учетом современных рисков в полной мере не обеспечивает здоровое взросление молодежи и может являться причиной девиантного поведения. Результат статьи может быть применим при обновлении программ по обучению безопасности жизнедеятельности в средних профессиональных учреждениях. Благодаря должному вниманию к данной проблеме, можно внести новизну в области безопасности жизнедеятельности и снизить показатели девиантного поведения молодежи в возрасте 15–35 лет.The aim of the study is to study the formation of a culture of life safety as the basis for the maturation of young people. Methods used: analysis of theoretical sources, statistical data, comparative analysis. The concepts of “life safety culture”, “informing” and “modern risks” are disclosed. The advantages of informing young people about modern risks for the continuous formation of a culture of life safety are described. It was revealed that the lack of education programs in secondary vocational institutions, taking into account modern risks, does not fully ensure the healthy maturation of young people and may be the cause of deviant behavior. The result of the article can be applied when updating life safety training programs in secondary professional institutions. Thanks to due attention to this problem, it is possible to introduce novelty in the field of life safety and reduce the rates of deviant behavior of young people aged 15–35 years

The iridium double perovskite Sr2YIrO6 revisited: A combined structural and specific heat study

Recently, the iridate double perovskite Sr$_2$YIrO$_6$ has attracted considerable attention due to the report of unexpected magnetism in this Ir$^{5+}$ (5d$^4$) material, in which according to the J$_{eff}$ model, a non-magnetic ground state is expected. However, in recent works on polycrystalline samples of the series Ba$_{2-x}$Sr$_x$YIrO$_6$ no indication of magnetic transitions have been found. We present a structural, magnetic and thermodynamic characterization of Sr$_2$YIrO$_6$ single crystals, with emphasis on the temperature and magnetic field dependence of the specific heat. Here, we demonstrate the clue role of single crystal X-ray diffraction on the structural characterization of the Sr$_2$YIrO$_6$ double perovskite crystals by reporting the detection of a $\sqrt{2}a \times \sqrt{2}a \times 1c$ supercell, where $a$, $b$ and $c$ are the unit cell dimensions of the reported monoclinic subcell. In agreement with the expected non-magnetic ground state of Ir$^{5+}$ (5d$^4$) in Sr$_2$YIrO$_6$, no magnetic transition is observed down to 430~mK. Moreover, our results suggest that the low temperature anomaly observed in the specific heat is not related to the onset of long-range magnetic order. Instead, it is identified as a Schottky anomaly caused by paramagnetic impurities present in the sample, of the order of $n \sim 0.5(2)$ \%. These impurities lead to non-negligible spin correlations, which nonetheless, are not associated with long-range magnetic ordering.Comment: 20 pages, 10 figure

A new surfactant-copper(ii) complex based on 1,4-diazabicyclo[2.2.2]octane amphiphile. Crystal structure determination, self-assembly and functional activity

© the Owner Societies 2018. A new surfactant-copper(ii) complex [Cu(L)Br3] (where LBr is 1-cetyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide) containing a transition metal in the head group has been synthesized and characterized. Physicochemical properties, thermal stability and 3D structure were determined using X-ray diffractometry, UV-vis spectroscopy, simultaneous thermogravimetry and differential scanning calorimetry combined with mass-spectrometry of evolved vapors. The study of the self-assembly and morphological features of associated structures was performed by potentiometry using a bromide ion selective electrode and fluorescence of pyrene and 1,6-diphenyl-1,3,5-hexatriene. The influence of the metal ion embedded into the surfactant structure on critical micelle concentration, degree of counterion binding, aggregation numbers and morphology of the associates was elucidated. High solubilizing capacity and complexation ability of the metal containing micelles with respect to Orange-OT hydrophobic dye and oligonucleotide were determined. Importantly, the functional properties of this metallosurfactant complex are much better compared to those of classical cationic surfactants bearing cyclic and acyclic head groups, LBr and the LBr-CuBr2 mixture. The new cationic metallosurfactant could be recommended for investigation in gene therapy

Antiferromagnetic Dimers of Ni(II) in the S=1 Spin-Ladder Na_2Ni_2(C_2O_4)_3(H_2O)_2

We report the synthesis, crystal structure and magnetic properties of the S=1 2-leg spin-ladder compound Na_2Ni_2(C_2O_4)_3(H_2O)_2. The magnetic properties were examined by magnetic susceptibility and pulsed high field magnetization measurements. The magnetic excitations have been measured in high field high frequency ESR. Although the Ni(II) ions form structurally a 2-leg ladder, an isolated dimer model consistently describes the observations very well. The analysis of the temperature dependent magnetization data leads to a magnetic exchange constant of J=43 K along the rungs of the ladder and an average value of the g-factor of 2.25. From the ESR measurements, we determined the single ion anisotropy to D=11.5 K. The validity of the isolated dimer model is supported by Quantum Monte Carlo calculations, performed for several ratios of interdimer and intradimer magnetic exchange and taking into account the experimentally determined single ion anisotropy. The results can be understood in terms of the different coordination and superexchange angles of the oxalate ligands along the rungs and legs of the 2-leg spin ladder.Comment: 8 pages, 10 figure

Land Resources of Alagirskii District As a Factor of Sustainable Development of the Agro-industrial Complex

The most important condition for the rational organization of the territory is the formation of a morphological appearance, which is distinguished by high productivity, ecological diversity, aesthetic appeal, and will satisfy sanitary and hygienic requirements. The use of land resources in the Alagirskii District of the Republic of North Ossetia-Alania and the development of measures for rational organization of the territory, with the creation of an effective system of land use, evaluation criteria of environmental reliability, social acceptability, economic efficiency and compliance with the legal regime of land use, are a necessary condition for the rational use of land. In this work, materials of land inventory for 2016–2018, data of the committee of land and property relations of the district, statistical data on the effectiveness of agricultural land were used. The developed data allows to establish the optimal ratio of natural ecosystems and agro-ecosystems for this natural-agricultural zone, to establish optimal areas of arable and forage lands that need improvement based on the landscape features of the territory for stability and development of agricultural production

Investigation of adsorption of chloroxexidine from spirituous solution on solid adsorbents

The results of the determination of the adsorption of chlorhexidine bigluconate on a solid surface from spirituous solutions of different concentrations at a constant temperature are given in the article. Different types of adsorption isotherms of chlorhexidine are shown on adsorbents of different chemical nature. Adsorbents with the highest sorption capacity for chlorhexidine have been identifiedВ статье приведены результаты определения адсорбции хлоргексидина биглюконата на твердой поверхности из спиртовых растворов разной концентрации при постоянной температуре. Показаны разные типы изотерм адсорбции хлоргексидина на адсорбентах разной химической природы. Выявлены адсорбенты с наибольшей сорбционной способностью к хлоргексидин

Youth Employment as a Prevention of Deviations

Целью исследования является анализ трудовой деятельности как профилактики девиаций у подростков. Использованы методы: анализ теоретических источников и статистических данных, сравнительный анализ. Раскрыты понятия «этапы взросления», «профессиональное самоопределение» и «труд». Выявлена взаимосвязь между занятостью и девиантным поведением молодежи. Описаны преимущества социально-трудовых отношений в жизни подростков. Результаты исследования могут быть применимы в социальной работе с молодежью, а также при планировании мероприятий по профессиональному самоопределению подростка.The aim of the study is work activity as a prevention of deviations in adolescents. The methods used are: analysis of theoretical sources and statistical data, comparative analysis. The concepts of “stages of growing up”, “professional self-determination” and “work” are revealed. The relationship between employment and deviant behavior of young people is revealed. The advantages of social and labor relations in the life of adolescents are described. The result of the article can be applied in social work with young people, as well as in planning activities for professional self-determination of a teenager