Social Cohesion and Cultural Expressions: The Case of the Sacred Textiles in the Armenian Orthodox Churches of Istanbul

Prologue The social and cultural history of Armenians is long; indeed one cannot fully appreciate its parameters without deeper investigation. This paper reports on a segment of Armenian history— the sacred historical textiles housed in the Armenian Orthodox Churches of Istanbul, Turkey. These artifacts had never before been studied, although a select few objects produced in Istanbul have been published in books devoted to the Armenian collections in Jerusalem, Etchmiadzin (Armenia), and the Sis collection from Anatolia currently in Beirut, Lebanon. Illuminated manuscripts receive the greatest attention among the historical Armenian religious artifacts, followed by stone, metal and wooden objects. Magnificent textiles exist in the aforementioned museum collections but have not been studied in as great a detail as in this endeavor. A book on the material, Splender and Pageantry: Textile Treasures from the Armenian Orthodox Churches of Istanbul (Marchese & Breu), is under contract to be published by fall of 2009. A second book on non-textile objects, Treasures of Faith: Sacred Relics and Artifacts from the Armenian Orthodox Churches of Istanbul (Marchese & Breu) is nearing completion. In 2002 we presented a paper at TSA on the miniature tradition in the textile collections. This paper expands on that work, as we have been studying the collections steadily for over 10 years. The research involved content analysis and ethnographic methodologies in working within the Armenian community in Istanbul

Expressions in Silk: Embroidered Miniatures on Historic Textiles from the Armenian Apostolic Churches of Istanbul

Introduction The assessment of Armenian embroidery offered by Kouymjian in his publication The Arts of Armenia is reflected in a collection of textile objects housed in the treasuries of the 33 Armenian Apostolic Churches and the Patriarchate (the official residence of the Patriarch) in Istanbul, Turkey. The textiles, many donated by devout members of the Church community, are still used in celebrations of the Divine Liturgy. The collections contain examples of the brilliant splendor associated with religious celebration, the depth of piety of the lay community, especially women, and a sense of attachment to the historical and cultural traditions of Christianity. From baptism and the beginning of life to the last rites in death, cloth played an important role in the domestic and religious culture of Armenian life. The religious textiles in the collections are a visible reflection of high artistic achievement attained by household-based and professional needle artists who labored in an effort to produce spectacular images in cloth and thread. They stand as a rich expression of individual talent and deep spiritual conviction. Colophons or inscriptions found on many of the pieces indicate that their makers or contributors hoped for salvation and honor by successive generations through donations of the textiles to the Divine Liturgy. In addition, the textiles augment the formality and static nature of the physical structure of the church by providing a mobile art that connects the lay community to the living context of the Divine Liturgy. The churches were the physical anchors of the Armenian community. Their material culture visibly projected social cohesion, pride and an emotional attachment to the core of beliefs that defined Armenian Christianity. Background Armenians. The Armenian Apostolic Churches of Istanbul were extremely important in maintaining the social identity and cultural heritage of the Armenian population of the city from the late medieval to the modern period. By the end of the sixteenth century, ( Armenians were part of a minority non-Muslim population that outnumbered Muslims. / By the end of the nineteenth century, Istanbul\u27s Armenian population was between 17 and 22 percent of the total population of the city (Karpat 1985, 95-106; Kouymjian 1997, 26; Sanjian 1965, 34). At this time 55 apostolic churches existed in the city (Tuglaci 1991). During the Ottoman Empire Armenians held high positions among the Ottoman authorities, as regional administrators and diplomats as well as accomplished artists and artisans (Barsoumian 1982, 171 ff; Tuglaci 1991; Davison 1982, 327)

Swirls in the solar corona

This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement No. 695075).Context. Vortex flows have been found in the photosphere, chromosphere, and low corona in observations and simulations. It has been suggested that vortices play an important role in channeling energy and plasma into the corona. However, the impact of vortex flows on the corona has not been studied directly in a realistic setup. Aims. We investigate the role vortices play for coronal heating using high-resolution simulations of coronal loops. The vortices are not artificially driven and they arise, instead, self-consistently from magnetoconvection. Methods. We performed 3D resistive (magnetohydrodynamic) MHD simulations with the MURaM code. Studying an isolated coronal loop in a Cartesian geometry allows us to resolve the structure of the loop interior. We conducted a statistical analysis to determine vortex properties as a function of height from the chromosphere into the corona. Results. We find that the energy injected into the loop is generated by internal coherent motions within strong magnetic elements. A significant part of the resulting Poynting flux is channeled through the chromosphere in vortex tubes forming a magnetic connection between the photosphere and corona. Vortices can form contiguous structures that reach up to coronal heights, but in the corona itself, the vortex tubes get deformed and eventually lose their identity with increasing height. Vortices show increased upward directed Poynting flux and heating rate in both the chromosphere and corona, but their effect becomes less pronounced with increasing height. Conclusions. While vortices play an important role for the energy transport and structuring in the chromosphere and low corona, their importance higher up in the atmosphere is less clear since the swirls are less distinguishable from their environment. Vortex tubes reaching the corona reveal a complex relationship with the coronal emission.Publisher PDFPeer reviewe

In Depth Insights into the Key Steps of Delamination of Charged 2D Nano Materials

Delamination is a key step to obtain individual layers from inorganic layered materials needed for fundamental studies and applications. For layered van-der-Waals materials like graphene the adhesion forces are small allowing for mechanical exfoliation, whereas for ionic layered materials like layered silicates the energy to separate adjacent layers is considerably higher. Quite counter intuitively, we show for a synthetic layered silicate (Na0.5-hectorite) that a scalable and quantitative delamination by simple hydration is possible for high and homogeneous charge density, even for aspect ratios as large as 20000. A general requirement is the separation of adjacent layers by solvation to a distance where layer interactions become repulsive (Gouy-Chapman length). Further hydration up to 34 nm leads to the formation of a highly ordered lamellar liquid crystalline phase (Wigner crystal). Up to 8 higher-order reflections indicate excellent positional order of individual layers. The Wigner crystal melts when the interlayer separation reaches the Debye length, where electrostatic interactions between adjacent layers are screened. The layers become weakly chargecorrelated. This is indicated by fulfilling the classical Hansen-Verlet and Lindeman criteria for melting. We provide insight into the requirements for layer separation and controlling the layer distances for a broad range of materials and outline an important pathway for the integration of layers into devices for advanced applications

Rapid Low-Dimensional Li+Ion Hopping Processes in Synthetic Hectorite-Type Li0.5[Mg2.5Li0.5]Si4O10F2

Understanding the origins of fast ion transport in solids is important to develop new ionic conductors for batteries and sensors. Nature offers a rich assortment of rather inspiring structures to elucidate these origins. In particular, layer-structured materials are prone to show facile Li+ transport along their inner surfaces. Here, synthetic hectorite-type Li0.5[Mg2.5Li0.5]Si4O10F2, being a phyllosilicate, served as a model substance to investigate Li+ translational ion dynamics by both broadband conductivity spectroscopy and diffusion-induced 7Li nuclear magnetic resonance (NMR) spin-lattice relaxation experiments. It turned out that conductivity spectroscopy, electric modulus data, and NMR are indeed able to detect a rapid 2D Li+ exchange process governed by an activation energy as low as 0.35 eV. At room temperature, the bulk conductivity turned out to be in the order of 0.1 mS cm-1. Thus, the silicate represents a promising starting point for further improvements by crystal chemical engineering. To the best of our knowledge, such a high Li+ ionic conductivity has not been observed for any silicate yet

Terrestrial solar radiation driven photodecomposition of ciprofloxacin in clinical wastewater applying mesostructured iron(III) oxide

Cationic cylindrical polymer brushes based on polybutadiene-block-poly(2-vinylpyridine) were applied as structure-directing agent for mesostructuring F

E.U. paediatric MOG consortium consensus: Part 4 – Outcome of paediatric myelin oligodendrocyte glycoprotein antibody-associated disorders

There is increasing knowledge on the role of antibodies against myelin oligodendrocyte glycoprotein (MOG-abs) in acquired demyelinating syndromes and autoimmune encephalitis in children. Better understanding and prediction of outcome is essential to guide treatment protocol decisions. Therefore, this part of the Paediatric European Collaborative Consensus provides an oversight of existing knowledge of clinical outcome assessment in paediatric MOG-ab-associated disorders (MOGAD). The large heterogeneity in disease phenotype, disease course, treatment and follow-up protocols is a major obstacle for reliable prediction of outcome. However, the clinical phenotype of MOGAD appears to be the main determinant of outcome. Patients with a transverse myelitis phenotype in particular are at high r