51 research outputs found

    Lexical interaction of the modern Greek language with Germanic and Romance languages (with reference to the vocabulary of English, French and modern Greek languages)

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    The article deals with the issues of lexical interaction of the modern Greek language with Germanic and Romance languages (represented by English and French). There were singled out two areas in which this lexical interaction is rather significant: the vocabulary related to food and drinks and the vocabulary used to designate objects and concepts of clothing, shoes, haberdashery and perfumer

    Magnetism, superconductivity and coupling in cuprate heterostructures probed by low-energy muon-spin rotation

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    We present a low-energy muon-spin-rotation study of the magnetic and superconducting properties of YBa2Cu3O7/PrBa2Cu3O7 trilayer and bilayer heterostructures. By determining the magnetic-field profiles throughout these structures we show that a finite superfluid density can be induced in otherwise semiconducting PrBa2Cu3O7 layers when juxtaposed to YBa2Cu3O7 "electrodes" while the intrinsic antiferromagnetic order is unaffected.Comment: 10 pages, 9 figures; figure 9 corrected in version

    The Early Period of the Napoleonic Wars through the Eyes of Artist and Military Man Louis-François Lejeune

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    Поступила в редакцию 05.02.2019. Принята к печати 18.04.2019.Submitted on 05 February, 2019. Accepted on 18 April, 2019.Данная статья посвящена анализу живописи художника и наполеоновского генерала Луи-Франсуа Лежена (1775–1848) как исторического источника для периода 1796–1800 гг. В 2012 г. в Версале прошла персональная выставка живописца, на которой были представлены работы, хранящиеся в этом музее и в частном собрании потомков художника. По итогам выставки был издан подробный каталог. Однако на русском языке о творчестве Лежена до сих пор не было опубликовано специальных работ. Между тем, творчество и личность Л.-Ф. Лежена интересны тем, что он был не только художником, но и боевым генералом, свидетелем и участником практически всех военных кампаний наполеоновской эпохи. Первой картиной, в которой проявился талант Л.-Ф. Лежена как художника и историографа, стала «Битва при Маренго», выставленная в Салоне 1801 г. За «Битвой при Маренго» последовал целый ряд интереснейших произведений: «Битва при Лоди», «Битва у Фаворской горы», «Битва при Абукире», «Битва при Пирамидах». Все названные полотна сегодня хранятся в Версальском дворце-музее. Разбору этих картин посвящена данная статья. На основе мемуаров художника, а также синхронных документов и свидетельств авторы объясняют содержание полотен, их соответствие реалиям и духу времени. Отличительной особенностью живописи Л.-Ф. Лежена стало совмещение на батальных произведениях разновременных сцен сражения, сближающих его живопись со средневековой миниатюрой. В то же время эта черта никоим образом не отразилась на достоверности картин, являющихся ценнейшим документом по истории наполеоновских войн.This article analyses paintings by artist and Napoleonic general L.-F. Lejeune (1775–1848) as a historical source reflecting the period between 1796 and 1800. In 2012, there was a personal exhibition of the painter in Versailles, which presented the works stored in the museum and in a private collection of the artist’s descendants. A detailed catalogue was published following the exhibition. There are no special works published in Russia devoted to the artist. Meanwhile, the works of Lejeune are of great interest because he was not only an artist, but also a general, an eyewitness and a participant of all the military campaigns of the Napoleonic era. The first painting where his talent of an artist and historiographer manifested itself was The Battle of Marengo exhibited in the Salon of 1801. It was followed by a number of his works, i.e. The Battle of Lodi, The Battle of Mount Tabor, The Battle of Abukir, and The Battle of the Pyramids. All these paintings are stored in the Palace of Versailles. This article analyses these paintings reflecting the early period of the Napoleonic Wars. The authors interpret the paintings and explore their correspondence to the realities and the spirit of the time, based on the memoirs of the artist and documents of the time. A distinctive feature of Lejeune’s painting was the combination of different battle scenes in a single canvas, which resembles mediaeval miniatures. Nevertheless, this fact did not affect the reliability of his canvases, which are valuable documents on the history of the Napoleonic Wars

    Особенности синтеза высокодисперсных алюмофосфатов состава AlPO 4·nH2O

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    Aluminum orthophosphate of the composition AlPO4·2H2O with a monoclinic structure identical to the structure of the natural mineral metavariscite was obtained by condensation method during hydrothermal treatment of alumophosphate solutions with a concentration (g/l) of Al2O3 90 – 115, P2O5 340 – 440 in the temperature range 95–99 °C. For the first time, the role of aging of the alumophosphate system in shortening of the induction period, simultaneous nucleation of primary particles in the entire volume of the solution and the formation of a pasty product with a predominant particle size of 1–10 μm, in contrast to 30–50 μm, characteristic of a fine-crystalline product obtained without aging of the solution, is established. It is shown that pasty AlPO4·2H2O, in comparison with fine-crystalline, is hardly soluble in HCl even under prolonged heating. The influence of P2O5 content in the alumophosphate solution, the conditions of its aging and the duration of hydrothermal treatment on the particle size distribution for synthesized aluminum orthophosphates have been established. Anhydrous alumophosphate obtained by dehydration of pasty AlPO4·2H2O in the temperature range of 150–200 °C with subsequent heat treatment at 900 °C is readily soluble in acids, and the predominant particle size is 5–13 μm.Методом конденсации при гидротермальной обработке алюмофосфатных растворов с концентрацией (г/л) Al2O3 90 – 115, P2O5 340 – 440 в интервале температур 95–99 °C получен ортофосфат алюминия состава AlPO 4·2H2O с моноклинной структурой, идентичной структуре природного минерала метаварисцита. Впервые установлена роль старения алюмофосфатной системы в сокращении индукционного периода, одновременном зарождении первичных частиц во всем объеме раствора и образовании пастообразного продукта c преобладающим размером частиц 1–10 мкм в отличие от 30–50 мкм, характерного для мелкокристаллического, получаемого без старения раствора. Показано, что пастообразный AlPO4·2H2O, по сравнению с мелкокристаллическим, является труднорастворимым в HCl даже при длительном нагревании. Установлено влияние содержания P2O5 в алюмофосфатном растворе, условий его старения, продолжительности гидротермальной обработки на распределение частиц по размерам для синтезируемых ортофосфатов алюминия. Безводный алюмофосфат, полученный дегидратацией пастообразного AlPO 4·2H2O в интервале 150–200 °C с последующей термообработкой при 900 °C, хорошо растворим в кислотах, преобладающий размер частиц составляет 5–13 мкм

    Study of the magnetic penetration depth in RbOs_2O_6

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    Measurements of the magnetic field penetration depth \lambda in the pyrochlore superconductor RbOs_2O_6 (T_c\simeq6.3 K) were carried out by means of the muon-spin-rotation (\muSR) technique. At low temperatures \lambda^{-2}(T) saturates and becomes constant below T\simeq 0.2T_c, in agreement with what is expected for weak-coupled s-wave BCS superconductors. The value of \lambda at T=0 was found to be in the range of 250 nm to 300 nm. \muSR and equilibrium magnetization measurements both reveal that at low temperatures λ\lambda is almost (at the level of 10%) independent of the applied magnetic field. This result suggests that the superconducting energy gap in RbOs_2O_6 is isotropic.Comment: 8 pages, 9 figure

    High Mutability of the Tumor Suppressor Genes RASSF1 and RBSP3 (CTDSPL) in Cancer

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    BACKGROUND:Many different genetic alterations are observed in cancer cells. Individual cancer genes display point mutations such as base changes, insertions and deletions that initiate and promote cancer growth and spread. Somatic hypermutation is a powerful mechanism for generation of different mutations. It was shown previously that somatic hypermutability of proto-oncogenes can induce development of lymphomas. METHODOLOGY/PRINCIPAL FINDINGS:We found an exceptionally high incidence of single-base mutations in the tumor suppressor genes RASSF1 and RBSP3 (CTDSPL) both located in 3p21.3 regions, LUCA and AP20 respectively. These regions contain clusters of tumor suppressor genes involved in multiple cancer types such as lung, kidney, breast, cervical, head and neck, nasopharyngeal, prostate and other carcinomas. Altogether in 144 sequenced RASSF1A clones (exons 1-2), 129 mutations were detected (mutation frequency, MF = 0.23 per 100 bp) and in 98 clones of exons 3-5 we found 146 mutations (MF = 0.29). In 85 sequenced RBSP3 clones, 89 mutations were found (MF = 0.10). The mutations were not cytidine-specific, as would be expected from alterations generated by AID/APOBEC family enzymes, and appeared de novo during cell proliferation. They diminished the ability of corresponding transgenes to suppress cell and tumor growth implying a loss of function. These high levels of somatic mutations were found both in cancer biopsies and cancer cell lines. CONCLUSIONS/SIGNIFICANCE:This is the first report of high frequencies of somatic mutations in RASSF1 and RBSP3 in different cancers suggesting it may underlay the mutator phenotype of cancer. Somatic hypermutations in tumor suppressor genes involved in major human malignancies offer a novel insight in cancer development, progression and spread

    Pigments Based on Thermally Treated Iron-containing Slimes

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    The effect exerted by chemical and phase composition on the color characteristics of the products of a heat treatment of slime obtained at purification of model wastewaters containing prescribed amount of zinc(II), nickel(II), copper(II), and chromium(III) compounds using ferroferrihydrosol was studied. The dependence of pigment properties of the products of the heat treatment of slimes on the concentration of metal compounds in them was determined
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