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The structure of bornemanite, a Group III Ti-disilicate mineral from Lovozero alkaline massif, Kola Peninsula, Russia
No full textThe crystal structure of bornemanite, ideally Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F, Ti+Nb = 3 apfu (atom per formula unit), a 5.4587(3), b 7.1421(5), c 24.528(2)Å, α 96.790(1), β 96.927(1), γ 90.326(1)o, V 942.4(2) Å3, sp. gr. P⎯1, Z = 2, Dcalc. 3.342 g.cm-3, from Lovozero alkaline massif, Kola Peninsula, Russia, has been solved and refined to R1 6.36% on the basis of 4414 unique reflections (Fo > 4σF). The crystal structure of bornemanite is as predicted by Sokolova [1]. Sokolova [1] established the relation between structure topology and chemical composition for 24 minerals with the TS (titanium-silicate) block, a central trioctahedral (O) sheet and two adjacent (H) sheets containing different polyhedra including (Si2O7) groups, and divided these minerals into four groups characterized by different topology and stereochemistry of the TS block. Each group of structures has a different linkage of H and O sheets in the TS block and a different arrangement of Ti (= Ti + Nb) polyhedra. In Groups I, II III and IV, Ti equals 1, 2, 3 and 4 apfu, respectively. Group III includes lamprophyllite, barytolamprophyllite, nabalamprophyllite, innelite, vuonnemite and epistolite. In bornemanite, the TS block exhibits the stereochemistry of Group III: Ti occurs in the H and O sheets, two (Si2O7) groups link to trans edges of a Ti octahedron in the O sheet. The O sheet cations give Na3Ti (4 apfu) in accord with Group III. The TS block has two different H sheets, H1 and H2, where (Si2O7) groups link to [5]Ti and [6]Nb polyhedra and there are two peripheral sites, which are occupied by Ba and Na, respectively. The crystal structure of bornemanite is a combination of a TS block and an I (intermediate) block. There are two I blocks: the I1 block is a layer of Ba atoms; the I2 block consists of Na polyhedra and (PO4) tetrahedra. The I1 and I2 blocks are topologically and chemically similar to the intermediate blocks in barytolamprophyllite and vuonnemite,
respectively. [1] Sokolova (2006)Can. Min. 44, 1273-1330
Priča iz života sokolova
Full text linkSlikovnica ‘Priča iz života sokolova’ rezultat je istoimenog projekta koji se provodio u Dječjem vrtiću Konavle. Želja za razvijanjem zajedništva djece rezultirala je provedbom niza aktivnosti povezanih s njegovanjem izvornih vrijednosti
From structure topology to chemical composition. XVI. New developments in the crystal chemistry and prediction of new structure topologies for titanium disilicate minerals with the ts block
No full textNew developments in crystal chemistry have been considered for 34 titanium disilicate minerals that contain the TS (Titanium-Silicate) block, a central trioctahedral (O) sheet, and two adjacent heteropolyhedral (H) sheets of [5-7]-coordinated polyhedra and Si2O7 groups. The general formula of the TS block is AP2BP2MH2MO4(Si2O7)2X4+n, where MH2 and MO4 = cations of the H and O sheets; MH = Ti, Nb, Zr, Mn, Ca + REE, Ca; MO = Ti, Zr, Nb, Fe2+, Mg, Mn, Ca, Na; AP and BP = cations at the peripheral (P) sites = Na, Ca + REE, Ca, Ba, Sr, K; X = anions, O, OH, F, and H2O groups; X4+n = XO4 + XPn, n = 0, 1, 1.5, 2, 4. There are three topologically distinct TS blocks based on three types of linkage of H and O sheets. In the crystal structures of TS-block minerals, TS blocks either link directly or alternate with intermediate (I) blocks. The I block consists of alkali and alkaline-earth cations, oxyanions (PO4), (SO4) and (CO3), and H2O groups. There are four groups of TS-block structures, based on the topology and stereochemistry of the TS block: Groups I, II, III, and IV, where Ti (+ Nb + Zr + Mg + Mn) = 1, 2, 3, and 4 apfu, respectively. In a TS-block structure, four types of self-linkage between adjacent TS blocks occur. The concept of basic and derivative structures has been introduced for TS-block minerals. A basic structure has the following four characteristics: (1) there is only one type of TS block; (2) the two H sheets of the TS block are identical; (3) there is only one type of I block, or it is absent; and (4) there is only one type of self-linkage of TS blocks. Basic structures obey the general structural principles of Sokolova (2006). A derivative structure has one or more of the three following characteristics: (1) there is more than one type of TS block; (2) there is more than one type of I block; (3) there is more than one type of self-linkage of TS blocks. A derivative structure is related to two or more basic structures of the same Group: it can be derived by adding these structures via sharing the central O sheet of the TS blocks of adjacent structural fragments which represent basic structures. There are 30 basic TS-block structures and four derivative TS-block structures. Based on established relations between basic and derivative structures, possible atomic arrangements and chemical formulae have been predicted for 12 derivative structures and two basic structures
Strategic development plan of town Březová u Sokolova
Full text linkCílem diplomové práce je sestavení strategického plánu rozvoje města Březová u Sokolova. Diplomová část je rozdělena na část teoretickou a část praktickou. V teoretické části jsou objasněny náležitosti postupu tvorby strategického plánu a v části praktické je vyhotoven strategický plán rozvoje města Březová u Sokolova. Strategický plán rozvoje města Březová u Sokolova obsahuje socioekonomickou analýzu a SWOT analýzu, na základě kterých byly v návrhové části stanoveny prioritní oblasti rozvoje města spolu s opatřeními a konkrétními aktivitami.The aim of the diploma thesis is to create a strategic development plan of town Březová u Sokolova. The diploma thesis is divided into theoretical part and practical part. The theoretical part explains the elements of the process of creating a strategic development plan and in the practical part a strategic development plan of the town Březová u Sokolova is drawn up. The strategic development plan of Březová u Sokolova contains socio - economic analysis and SWOT analysis, on the basis of which priority areas for urban development were established, along with measures and specific activities
From structure topology to chemical composition. XXII. Titanium silicates : Revision of the crystal structure of jinshajiangite, NaBaFe2+4Ti2(Si2O7)2O2(OH)2F, A group-II TS-block mineral
No full textThe crystal structure of jinshajiangite from the Verkhnee Espe deposit, Kazakhstan, NaBaFe2+4Ti2(Si2O7)2O2(OH)2F, was refined from a twinned crystal to R1 = 3.13% on the basis of 6745 unique reflections [Fo > 4σFo], space group C1, Z = 8, a 10.7059(5), b 13.7992(7), c 20.760(1) Å , α 90.008(1), β 94.972(1), γ 89.984(1)°, V 3055.4(4) Å 3. The crystal used for the structure refinement was analyzed by electron microprobe. The empirical formula was calculated on 19 (O+F), with equation presented was calculated by analogy with jinshajiangite from Norra Karr, Sweden (Sokolova et al. 2009a) and H2O from the crystal-structure analysis. In the crystal structure, TS (Titanium Silicate) and I (Intermediate) blocks alternate along c. The TS block consists of HOH sheets (H-heteropolyhedral, O-octahedral). The topology of the TS block is as in Group II of the TS-block minerals where Ti (+Nb)=2 apfu. In the O sheet, ten [6]MO sites are occupied mainly by °° Fe2+, with . = 1.622 Å. The MH octahedra and Si2O7 groups constitute the H sheet. Fluorine atoms and OH groups are ordered at the XPM (H sheet) and XOA (O sheet) sites, respectively. The TS blocks link via common vertices of MH octahedra, i.e., MH-XPM- MH bridges. In the I block, Ba and K occur at the two AP sites, with Ba . K, and the two BP sites are occupied by Na and Ca, with Na > Ca. Jinshajiangite is isostructural with bobshannonite, Na2KBa(Nb,Ti)4Mn8(Si2O7)4O4(OH)4(O,F)2, Z = 4
Effect of Stevia water extract on sensory characteristics of bakery products
No full textSokolova, N. Effect of Stevia water extract on sensory characteristics of bakery products / N. Sokolova, V. Holovniak // Наукові здобутки молоді – вирішенню проблем харчування людства у ХХІ столітті: матеріали 84-ї Міжнар. наук. конф. молодих учених, аспірантів і студентів, Київ, 23–24 квіт. 2018 р. / Нац. ун-т харч. технологій. – Київ, 2018. – Ч. 1. – С. 178. – Бібліогр.: 2 назв
ON ANTROPOCENTRIC APPROACH TO TEXT AND DISCURSIVE TEXT PERCEPTION IN MONOGRAPH BY J. SOKOLOVA "TEXTS – IMAGES – COMMUNICATES"
No full textThe article analyzes the monograph “Texts – Images – Communicates” by Jana
Sokolova. The monograph combines the methods of linguocognitology, Gestalt psychology
and discourse analysis to solve the problem of a combination of a text, an image and a communicate in their mono-code, semi-code and poly-code aspects
Cámaraite, Ba3NaTi4(Fe2+,Mn)8(Si2O7)4O4(OH,F)7. II. The crystal structure and crystal chemistry of a new group-II Ti-disilicate mineral
No full textCa ́maraite ideally Ba3NaTi4Fe2+8(Si2O7)4O4(OH)4F3 - is triclinic, space group C1, a=10.6965(7)Å, b=13.7861(9)Å,c=21.478(2)Å,α=99.345(1)°,β=92.315(2)°,γ=89.993(2)°,V=3122.6(4)Å3,Z = 4, Dcalc. = 4.018 g cm -3, from the Verkhnee Espe alkaline deposit, Akjailyautas Mountains, Kazakhstan, has been solved and refined to R1 5.87% on the basis of 6682 unique reflections (Fo >4ΣF). The crystal structure of cámaraite can be described as a combination of a TS block and an intermediate (I) block. The TS (titanium silicate) block consists of HOH sheets (H-heteropolyhedral, O-octahedral), and is characterized by a minimal cell based on translation vectors t1 and t2, with t1 ~5.5 and t2 ~7 Å and t1 ^ t2 close to 90°. We describe the crystal structure of cámaraite using a double minimal cell, with 2t1 and 2t2 translations. In the O sheet, there are eight [6]-coordinated MO sites occupied mainly by Fe2+ and Mn, with minor Fe3+, Mg, Zr, Ca and Zn with = 2.185 Å. Eight MO sites give, ideally Fe2+8 p.f.u. In the H sheet, there are four [6]-coordinated MH sites occupied almost solely by Ti (Ti = 4 a.p.f.u.), with = 1.963 Å, and eight [4]-coordinated Si sites occupied solely by Si, with = 1.621 Å. The topology of the TS block is as in Group II of the Ti-disilicates (Ti = 2 a.p.f.u. per minimal cell) in the structure hierarchy of Sokolova (2006). There are six peripheral (P) sites, four [8-12]-coordinated Ba-dominant AP sites, giving ideally 3 Ba p.f.u., and two [10]-coordinated Na-dominant BP sites, giving ideally 1 Na p.f.u. There are two I blocks: the I1 block is a layer of Ba atoms (two AP sites); the I2 block is a layer of Ba (two AP sites) and Na atoms (two BP sites). Along c, there are two types of linkage of TS blocks: (1) TS blocks link via AP cations which constitute the I1 block, and (2) TS blocks link via common vertices of MH octahedra (as in astrophyllite-group minerals) and AP and BP cations which constitute the I2 block. Cámaraite is the only mineral of Group II with two types of linkage of TS blocks and two types of I blocks in its structure. The relation of cámaraite to the Group-II minerals is discussed
Russia's first female crime writer, Aleksandra Sokolova (1833-1914) : gender, violence and agency
No full textThis article discusses the work of Russia’s first female crime writer: Aleksandra Sokolova (1833-1914). Amongst the numerous authors writing crime fiction in the late Imperial era, Sokolova was one of only two women working in the genre. The analysis here focuses on two of Sokolova’s crime novels: Bez sleda (Without a Trace) from 1890 and Spetaia pesnia (The Song Has Been Sung) from 1892. It argues that, whilst adhering to certain conventions previously established by male authors in the genre, Sokolova productively exploits or departs from others so as to criticize the patriarchal organization of both the judicial system and Russian society more broadly. Most notably, the use of a female focalizer in Bez sleda allows Sokolova to illustrate the brutalization of women that results from their lack of agency and authority in Russia at the time.Peer reviewe
Some Remarks about the Ceiling Painting of Bartolomeo Tarsia from the Dance Hall of the Great Peterhof Palace
No full textThis paper is dedicated to the painting ceiling created in the middle of the 18th century by the
Venetian artist Bartolomeo Tarsia for the Dance Hall of the Great Peterhof Palace. The plafond
was badly destroyed during the Second World War and was re-painted by Soviet artists
in the second half of the last century from preserved pre-war photographs and a preparatory
drawing. These documents formed the basis of our research. Starting from the 19th century,
the subject of the plafond is interpreted mainly as “Apollo and the Muses on mount Parnassus”.
An accurate examination and analysis of Tarsia’s preparatory drawing, along with an appeal to
well-known prototypes from Western European painting, made it possible to come to some
conclusions about the subject of the artwork, the nature of its iconography, and also to revise
the established interpretation. In particular, we considered the problem of the iconography of
Parnassus and Helikon, we also noted the co-presence on the ceiling of the figures of Minerva,
the Muses and Pegasus, referring to one specific episode from Ovid’s Metamorphoses; it was
also discovered that in the Tarsia’s native Republic of Venice — in Padua — there is a plafond
by Giuseppe Le Gru, known as the “Triumph of the Sciences”, correlated in time of creation
and content to Tarsia’s plafond. Like Parnassus, the subject with Minerva and/or Apollo and
the Muses on Mount Helicon has an allegorical meaning — the prosperity and glory of the
sciences and arts. The Peterhof plafond also has this allegorical character. The image of the
supreme goddess Juno crowning the composition serves as an additional confirmation of this,
and also allows us to attribute this ceiling to examples of the embodiment of female mythological
iconography, which generally corresponds to the logic of the decorative decoration of the
palace and corresponds to the spirit of the time. In addition, the possible parallels with other
works of the middle of the 18th century, with which the Peterhof plafond shows ideological
and compositional similarity, are proposed in the paper. Among such examples, there is one
of the illustrations by Giambattista Piazzetta for the grandiose Venetian edition of “La Gerusalemme
liberata (Jerusalem delivered)” by Torquato Tasso in 1745
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