Determination of the orbital moment and crystal field splitting in LaTiO3_{3}

Utilizing a sum-rule in a spin-resolved photoelectron spectroscopic experiment with circularly polarized light, we show that the orbital moment in LaTiO$_3$ is strongly reduced both below and above the N\'{e}el temperature. Using Ti $L_{2,3}$ x-ray absorption spectroscopy as a local probe, we found that the crystal field splitting in the $t_{2g}$ subshell is about 0.12-0.30 eV. This large splitting does not facilitate the formation of an orbital liquid

Data on granulometric composition of calcium phosphate obtained by dispersion method

The kinetics of calcium phosphate crystallization from model solutions of saliva and liquid phase of dental plaque has been studied by the dispersion method. It was found that the composition of the saliva model system is favorable for the growth of larger crystals. The size of the particles in crystallization varies nonlinearly. As supersaturation grows, the amount of formed particles increases, however, the average rate of crystallite growth decreases

Study of thermal effects of silicate-containing hydroxyapatites

The possibility of modifications of hydroxyapatite silicate ions, from the extracellular fluid prototype solution under near-physiological conditions has been studied. Formation of silicon-structured hydroxyapatite with different extent of substitution of phosphate groups in the silicate group has been established through chemical and X-ray diffraction analyses, FTIR spectroscopy and optical microscopy. The results obtained are in agreement and suggest the possibility of substitution of phosphate groups for silicate groups in the hydroxyapatite structure when introducing different sources of silica, tetraethoxysilane and sodium silicate, in the reaction mixture. Growth in the amount of silicon in Si-HA results in the increase in the thermal stability of the samples. The greatest mass loss occurs at temperatures in the range of 25-400 °С that is caused by the removal of the crystallization and adsorption water and volatile impurities. It is shown that the modified apatites are of imperfect structure and crystallize in a nanocrystalline state

Vascular skin lesions in workers at an electrolysis department of the aluminium plant.

The article presents the issues of epidemiology, etiology and clinical symptoms of the skin lesions in workers at an electrolysis department of the aluminum plant. The clinical cases are presented

Priority scientific directions and achievements of the department of dermatovenerology of the Ural state medical university. Part 2

From the moment of the organization of skin and venereal diseases department the most important components of the activity were medical, pedagogical and research work. A lot of researches were carried out and are provided to this day. The article provides incentives for the scientific directions of the department: pediatric dermatovenerology, studying of chronic and dermatoses of adults and children, dermato-oncology, cosmetology - from inception to the present day. The article talks about people, thanks to whom the department appeared and is developing todayС момента организации кафедры кожных и венерических болезней важнейшими составляющими деятельности были лечебная, педагогическая и научно-исследовательская работа. Множество исследований проводились и проводятся по сей день. В статье описаны научные направления работы кафедры: детская дерматовенерология, изучение хронических и редких дерматозов взрослых и детей, дерматоонкология, косметология — от зарождения до наших дней. В статье повествуется о людях, благодаря которым кафедра появилась и развивается сегодн

Population genomics of post-glacial western Eurasia.

Western Eurasia witnessed several large-scale human migrations during the Holocene <sup>1-5</sup> . Here, to investigate the cross-continental effects of these migrations, we shotgun-sequenced 317 genomes-mainly from the Mesolithic and Neolithic periods-from across northern and western Eurasia. These were imputed alongside published data to obtain diploid genotypes from more than 1,600 ancient humans. Our analyses revealed a 'great divide' genomic boundary extending from the Black Sea to the Baltic. Mesolithic hunter-gatherers were highly genetically differentiated east and west of this zone, and the effect of the neolithization was equally disparate. Large-scale ancestry shifts occurred in the west as farming was introduced, including near-total replacement of hunter-gatherers in many areas, whereas no substantial ancestry shifts happened east of the zone during the same period. Similarly, relatedness decreased in the west from the Neolithic transition onwards, whereas, east of the Urals, relatedness remained high until around 4,000 BP, consistent with the persistence of localized groups of hunter-gatherers. The boundary dissolved when Yamnaya-related ancestry spread across western Eurasia around 5,000 BP, resulting in a second major turnover that reached most parts of Europe within a 1,000-year span. The genetic origin and fate of the Yamnaya have remained elusive, but we show that hunter-gatherers from the Middle Don region contributed ancestry to them. Yamnaya groups later admixed with individuals associated with the Globular Amphora culture before expanding into Europe. Similar turnovers occurred in western Siberia, where we report new genomic data from a 'Neolithic steppe' cline spanning the Siberian forest steppe to Lake Baikal. These prehistoric migrations had profound and lasting effects on the genetic diversity of Eurasian populations

ДЕЛОВАЯ ИГРА КАК СПОСОБ ИНТЕНСИФИКАЦИИ ОБУЧЕНИЯ ИНОСТРАННОМУ ЯЗЫКУ

Globalization processes taking place in contemporary world, economical, scientific and technical, cultural advancement of our society make new demands to university graduates. They must acquire communicative competence, readiness for professional activities in a foreign language environment. The article is devoted to the issues of foreign language teaching with business role-playing games. The authors analyze the be-nefits of business role-playing games, criteria of their success.Процессы глобализации, происходящие в современном мире, экономическое, научно-техническое, культурное развитие общества предъявляют новые требования к выпускникам вузов. Они должны обладать коммуникативной компетенцией, готовностью к профессиональной деятельности в иноязычной среде. Статья посвящена рассмотрению вопросов обучения иностранному языку с использованием деловых игр. Авторы исследуют преимущества деловых игр, критерии успешности их проведения

Electromagnetic properties of LaCa3Fe5Oi2 in the microwave range

The X-ray diffraction analysis of the LaCa3Fe5O12 ferrite (lanthanum ferrite) prepared through high-temperature synthesis via ceramic technology was performed. It was found that ferrites belong to tetragonal system. The electromagnetic response from a flat layer of the composite based on this material under electromagnetic radiation in the frequency range of 0.01-18 GHz was investigated. It is shown that the developed material effectively interacts with electromagnetic radiation. The interaction effectiveness is directly proportional to ferrite concentration. Increased concentration of ferrite leads to growth of the reflection coefficient due to high conductivity of the material and visible decrease in the transmission coefficient in the frequency range of 4-14 GHz