Las Lunas, Yuncler (Toledo). Un depósito de materiales metálicos del Bronce Final en la Submeseta Sur de la Península Ibérica

Se exponen los resultados del primer estudio realizado sobre un nuevo conjunto de materiales metálicos del Bronce Final recuperado a finales de 2008 en las excavaciones arqueológicas del yacimiento de Las Lunas (Yuncler, Toledo, España). La localización geográfica del hallazgo, lejos de las principales zonas de dispersión conocidas para este tipo de conjuntos, la singularidad de los objetos que integra, y las relaciones atlánticas y mediterráneas que evidencian sus materiales, lo convierten en un ejemplo destacado para el estudio de este período en el centro de la Península Ibérica.Peer reviewe

Physical and mechanical properties of ZrO[2]/single wall carbon nanotubes nanocomposites

Zirconia ceramics reinforced with 0, 0.1, 0.5, and 1 wt.% single wall carbon nanotubes were fabricated by spark plasma sintering. The sintering was performed at 1500°C with a dwell time of 10 min, with heating and cooling rates of 100°C/min, and uniaxial pressure of 40 MPa was applied. Relative densities of the obtained pellets were calculated by weighing the pellets and measuring their dimensions. The highest value for microhardness was obtained for the pure ZrO[2] (14.72 GPa), and it decreased with the increase in the content of carbon nanotubes. On the other hand, fracture toughness of the obtained composites increased with the increase in carbon content. The highest value for fracture toughness was obtained for the composite with 1 wt.% of CNT (6.97 MPa·m{1/2})

The synthesis of a novel diazo-diphosphetidine-diamine based on interaction of 2-amino-4-phenylthiazole with chloride phosphorus(III)

In recent years, the obtaining and study of structural features of organophosphorus heterocyclic compounds with P-N bond, attracted considerable attention. Heterocycles which contain P-C, P-N, P-O and P-S bonds have a high biological activity and commercial importance. In this work, we have studied the reaction of interaction 2-amino-4-phenylthiazole with. phosphorus trichloride The conditions of reaction and structure of the resulting compounds were found

Эконометрическое моделирование и анализ влияния санкционированных действий стран запада по отношению к России на крупнейшие российские предприятия и финансовые рынки

В статье отражаются и анализируются суть и эволюция режима влияния санкционированных действий против Российской Федерации. Исследуется воздействие данного эффекта на различные показатели: котировки курсов валют, биржевых индексов, акций, цен на сырьё. Особым аспектом анализа является применение эконометрических регрессионных и корреляционных моделей при исследовании временных рядов результативного и факторных признаков

The gas–liquid phase-transition singularities in the framework of the liquid-state integral equation formalism

6 pages, 4 figures.-- PACS: 64.70.Fx; 65.20.+w; 02.30.Rz; 62.10.+sThe singularities of various liquid-state integral equations derived from the Ornstein–Zernike relation and its temperature derivatives, have been investigated in the liquid–vapor transition region. As a general feature, it has been found that the existence of a nonsolution curve on the vapor side of the phase diagram, on which both the direct and the total correlation functions become complex—with a finite isothermal compressibility—also corresponds to the locus of points where the constant-volume heat capacity diverges, in consonance with a divergence of the temperature derivative of the correlation functions. In contrast, on the liquid side of the phase diagram one finds that a true spinodal (a curve of diverging isothermal compressibilities) is reproduced by the Percus–Yevick and Martynov–Sarkisov integral equations, but now this curve corresponds to states with finite heat capacity. On the other hand, the hypernetted chain approximation exhibits a nonsolution curve with finite compressibilities and heat capacities in which, as temperature is lowered, the former tends to diverge.E.L. acknowledges financial support of the Dirección General de Investigación Científica y Técnica under Grant No. FIS2004-02954-C03-01. This work has been carried out under the auspices of the exchange agreement between the Consejo Superior de Investigaciones Científicas and the Russian Academy of Sciencies, which supported the exchange visits of E.L. and G.S. in the past two years.Peer reviewe

Геоэкологическая характеристика и проект мониторинга территории Тайлаковского нефтегазового месторождения (Тюменская область)

Выпускная квалификационная работа 135 с., 8 рис., 34 табл., 71 источников, 2 приложения. Ключевые слова: геоэкологическая характеристика, мониторинг, техногенные объекты, отбор проб, анализ проб, атмосферный воздух, снеговой покров, растительность, почва, поверхностные воды и донные отложения Объектом исследования является Тайлаковское нефтегазовое месторождение Цель работы – провести комплексный экологический мониторинг на территории Тайлаковского нефтегазового месторождения. Основные конструктивные, технологические и технико эксплуатационные характеристики: составлена карта-схема организации пунктов мониторинга на территории месторождения.Final qualification work of 135 pages, 8 fig., 34 tab., 71 sources, 2 applications. Keywords: geoecological characteristic, monitoring, technogenic objects, sampling, analysis of tests, atmospheric air, snow cover, vegetation, soil, surface water and ground deposits Object of research is the Taylakovsky oil and gas field The work purpose – to carry out complex environmental monitoring in the territory of the Taylakovsky oil and gas field. The main constructive, technological and equipment operational characteristics: the schematic map of the organization of points of monitoring in the territory of the field is made