9 research outputs found

    Book Review: Turlej, S. Justiniana Prima. An Underestimated Aspect of Justinian’s Church Policy [Text]. – Krakow : Jagiellonian University Press, 2017. – 244 p. – (Jagiellonian Studies in History ; vol. 7)

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    The authors of the review identify strengths and weaknesses of the Stanislav Turley’s monograph dedicated to the phenomenon of the Early Byzantine city, which was named Justiniana Prima in honor of Justinian the First and his ecclesiastical construction

    The Paleozoic-Aged University Foidolite-Gabbro Pluton of the Northeastern Part of the Kuznetsk Alatau Ridge, Siberia: Geochemical Characterization, Geochronology, Petrography and Geophysical Indication of Potential High-Grade Nepheline Ore

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    Geological, geochemical and ground magnetic techniques are used to characterize the University alkaline-gabbroid pluton and crosscutting N-S trending alkaline dikes, located northeast of the Kuznetsk Alatau ridge, Siberia. Trace element concentrations and isotopic compositions of the igneous units were determined by XRF, ICP-MS and isotope analysis. The Sm-Nd age of subalkaline (melanogabbro, leucogabbro 494–491 Ma) intrusive phases and crosscutting alkaline dikes (plagioclase ijolite, analcime syenite 392–389 Ma) suggests two stages of activity, likely representing separate events. The subalkaline and alkaline rocks are characterized by low silicic acidity (SiO2 = 41–49 wt %), wide variations in alkalinity (Na2O + K2O = 3–19 wt %; Na2O/K2O = 1.2–7.2 wt %), high alumina content (Al2O3 = 15–28 wt %) and low titanium content (TiO2 = 0.07–1.59 wt %). The new trace element data for subalkaline rocks (?REE 69–280 ppm; La/Yb 3.7–10.2) of the University pluton and also the crosscutting younger (390 Ma) alkaline dikes (?REE 10–1567 ppm; La/Yb 0.7–17.8 ppm) both reflect an intermediate position between oceanic island basalts (OIBs) and island arc basalts (IABs). The presence of a negative Nb–Ta anomaly and the relative enrichment in Rb, Ba, Sr, and U indicate a probable interaction of mantle plume material with the lithospheric mantle beneath previously formed accretion complexes of subduction zones. The isotopic signatures of strontium (eSr(T) +3.13–+28.31) and neodymium (eNd(T) +3.2–+8.7) demonstrate the evolution of parental magmas from a plume source from moderately depleted PREMA mantle, whose derivatives underwent selective crustal contamination

    Church Construction in the Early Justinian’s Rule (527–534)

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    There are some unsolved problems in the historiographical field of the church history of Early Byzantium. One of them concerns the public rules and standards for the construction of religious objects. Why did they begin to form only in the 520s? And how this phenomenon was connected with the construction activity of Justinian the Great? The former question is of great significance for solution of one of aforesaid problems, namely, the problem of the determination of size, stages, and costs for the church building in the rule of the emperor. The author used a new approach to demonstrate the poor participation of Justinian in the erection of “divine houses” in Byzantium in the first years of his individual ruling (527-534). This approach bases on the analyses of legislative data on religious building. Comparison of the obtained results with well-known corresponding reports of Procopius (in Anecdota and Buildings) gives all the reasons to say about almost only private activity in the sphere of the church building before 535, as well as the absence of a state building program in this period of Justinian’s rule

    Justinian I’s Church Building by the Data of His Novels

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    The new publication carries on the study with theme of the Justinian’s I building activity. There is the legislative material of the period 535–546 selected as the research object. An analysis of data of the Justinianic novels and edicts displays some interesting things, which do partly correct a certain modern notions of this object. At the same time, the legislative data corroborated the known from other sources fact of intensive church building under Justinian the Great. The well-known prevailing role of the private builder in the same time did receive the supplementary confirmation as well. But Justinian I was not a big private builder of churches, as the literary historical sources try to demonstrate. This emperor is mentioned in his novels in connection with the building of monasteries. It’s scholar knowledge that Justinian was working out the standards in the sphere of the religious building. However, full regulation of the building process didn’t take place under his rule: just separate norms have arisen then, which concerned mainly the proprietors’ rights and duties, and as well indirectly as the volume of church building. Consequently, Justinian the Emperor did not only build many religious edifices, but limited private building too. Finally, the aforesaid witnesses that he didn’t have any program of church building in the Empire, and he didn’t waste state financial means for its realization

    Study Of (1-Pentyl-1H-Indol-3-Il) (4-Ethylnaphtalene-1-Il)Methanone Adsorption on People Hair

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    Изучена адсорбция (1-пентил-1Н-индол-3-ил)(4-этилнафталин-1-ил)метанона на измельченных темных и светлых волосах. Определена максимальная предельная адсорбция для обоих типов волос. Построены изотермы адсорбции и проанализированы с использованием модельных уравнений. Установлено, что наиболее точно адсорбция (1-пентил-1Н-индол-3-ил) (4-этилнафталин-1-ил)метанона описывается моделью Фрейндлиха, которая характеризует гетерогенность поверхности волос. Определено общее число электроноакцепторных центров поверхности волос по адсорбции пиридина. Установлена зависимость предельной адсорбции (1-пентил-1Н-индол-3-ил)(4-этилнафталин-1-ил)метанона от кислотности поверхности. Высказано предположение о зависимости адсорбции анализируемого вещества на волосах от количества пигмента меланина, что объясняет превосходство предельной адсорбции на темных волосах по сравнению со светлымиAdsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone on blended black and white hair samples was studied. Absolute adsorption amount was calculated for both hair types. Also adsorption isotherms were constructed and analyzed using different adsorption models. It was estimated that adsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone is best described by Freindlich model which characterizes hair surface heterogeneity. Total amount of electron acceptor centers of hair surface was estimated using pyridine adsorption. Depending absolute adsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone on surface acidity was found. It was suggested that analyte’s adsorption on hair depends on melanin amount. This idea explains that absolute adsorption on black hair is higher than on whit

    Study Of (1-Pentyl-1H-Indol-3-Il) (4-Ethylnaphtalene-1-Il)Methanone Adsorption on People Hair

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    Изучена адсорбция (1-пентил-1Н-индол-3-ил)(4-этилнафталин-1-ил)метанона на измельченных темных и светлых волосах. Определена максимальная предельная адсорбция для обоих типов волос. Построены изотермы адсорбции и проанализированы с использованием модельных уравнений. Установлено, что наиболее точно адсорбция (1-пентил-1Н-индол-3-ил) (4-этилнафталин-1-ил)метанона описывается моделью Фрейндлиха, которая характеризует гетерогенность поверхности волос. Определено общее число электроноакцепторных центров поверхности волос по адсорбции пиридина. Установлена зависимость предельной адсорбции (1-пентил-1Н-индол-3-ил)(4-этилнафталин-1-ил)метанона от кислотности поверхности. Высказано предположение о зависимости адсорбции анализируемого вещества на волосах от количества пигмента меланина, что объясняет превосходство предельной адсорбции на темных волосах по сравнению со светлымиAdsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone on blended black and white hair samples was studied. Absolute adsorption amount was calculated for both hair types. Also adsorption isotherms were constructed and analyzed using different adsorption models. It was estimated that adsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone is best described by Freindlich model which characterizes hair surface heterogeneity. Total amount of electron acceptor centers of hair surface was estimated using pyridine adsorption. Depending absolute adsorption of (1-pentyl-1H-indol-3-il)(4-ethylnaphtalene-1-il)methanone on surface acidity was found. It was suggested that analyte’s adsorption on hair depends on melanin amount. This idea explains that absolute adsorption on black hair is higher than on whit

    Towards Bright Single-Photon Emission in Elliptical Micropillars

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    In recent years, single-photon sources (SPSs) based on the emission of a single semiconductor quantum dot (QD) have been actively developed. While the purity and indistinguishability of single photons are already close to ideal values, the high brightness of SPSs remains a challenge. The widely used resonant excitation with cross-polarization filtering usually leads to at least a two-fold reduction in the single-photon counts rate, since single-photon emission is usually unpolarized, or its polarization state is close to that of the exciting laser. One of the solutions is the use of polarization-selective microcavities, which allows one to redirect most of the QD emission to a specific polarization determined by the optical mode of the microcavity. In the present work, elliptical micropillars with distributed Bragg reflectors are investigated theoretically and experimentally as a promising design of such polarization-selective microcavities. The impact of ellipticity, ellipse area and verticality of the side walls on the splitting of the optical fundamental mode is investigated. The study of the near-field pattern allows us to detect the presence of higher-order optical modes, which are classified theoretically. The possibility of obtaining strongly polarized single-photon QD radiation associated with the short-wavelength fundamental cavity mode is shown
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