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Journal articles on the topic 'Decorated sheaves'

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1

Schmitt, Alexander. "Stability Parameters for Quiver Sheaves." International Mathematics Research Notices 2020, no. 20 (2020): 6666–98. http://dx.doi.org/10.1093/imrn/rnz162.

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Abstract In this paper, we will begin the systematic study of the influence of the choice of a faithful representation on the notion of (semi)stability for decorated principal bundles. We will prove boundedness for slope semistable quiver sheaves.
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2

Schmitt, Alexander. "Moduli for decorated tuples of sheaves and representation spaces for quivers." Proceedings Mathematical Sciences 115, no. 1 (2005): 15–49. http://dx.doi.org/10.1007/bf02829837.

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3

Pustetto, Andrea. "Mehta–Ramanathan for $$\varepsilon $$ ε and $$\textsf {k}$$ k -semistable decorated sheaves". Geometriae Dedicata 182, № 1 (2015): 133–62. http://dx.doi.org/10.1007/s10711-015-0132-2.

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4

Podosenova, Yulia A., Natalia B. Krylasova, and Andrey V. Danich. "Wooden Sheaths with Metallic Coating in the Middle Age Perm Cis-Urals." Povolzhskaya Arkheologiya (The Volga River Region Archaeology) 2, no. 40 (2022): 72–88. http://dx.doi.org/10.24852/pa2022.2.40.72.88.

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On the territory of the Perm cis-Urals during the Middle Ages wooden knife sheaths coated with metallic plates became popular. Most sheaths’ decorations were made of metal alloys with a high percentage of silver. Some specimens were decorated with grains, filigree, glass or stone encrustations, gild, and printed anthropomorphic and ornitomorphic images. The object of the article is to introduce into scientific discourse the sources and research results that will facilitate determining basic technological characteristics and individual features in the sheaths’ functions. Based on source collect
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5

Bjerregaard, Mikael Manøe. "Middelalderlige kirkelader i Danmark." Kuml 52, no. 52 (2003): 247–89. http://dx.doi.org/10.7146/kuml.v52i52.102646.

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Medieval Church Barns in DenmarkThe subject of this article is medieval church barns within the area of present-day Denmark. A church barn (or tithe barn) is a building erected near a parish church and used for storing the crops that local peasants paid as tithes or taxes to the church. Constructed as functional buildings for the church, these barns have both a clerical and a secular context. In 1912 M. Mackeprang gave an account of relevant written sources and made a provisional list of barns preserved at that time. In this work the list has been revised to describe the present day situation
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6

Gibson, Katherine, Joshua K. Chu, Shiwei Zhu, et al. "A Tripartite Efflux System Affects Flagellum Stability in Helicobacter pylori." International Journal of Molecular Sciences 23, no. 19 (2022): 11609. http://dx.doi.org/10.3390/ijms231911609.

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Helicobacter pylori uses a cluster of polar, sheathed flagella for swimming motility. A search for homologs of H. pylori proteins that were conserved in Helicobacter species that possess flagellar sheaths but were underrepresented in Helicobacter species with unsheathed flagella identified several candidate proteins. Four of the identified proteins are predicted to form part of a tripartite efflux system that includes two transmembrane domains of an ABC transporter (HP1487 and HP1486), a periplasmic membrane fusion protein (HP1488), and a TolC-like outer membrane efflux protein (HP1489). Delet
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7

Xia, Zhigang, Hong Shan Wang, and Wenxiang Ye. "A method to produce ring single yarn with fancy and anti-frictional structure by feeding filaments in front of the front roller nip." Textile Research Journal 90, no. 5-6 (2019): 631–40. http://dx.doi.org/10.1177/0040517519877466.

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In this study, a composite ring spinning via feeding filaments in front of the front roller nip method was developed as a novel, effective way to form yarn surface looped fancy wrappings. The novel method was theoretically demonstrated to produce fil-wrap yarn with tight filament wrappings and periodic filament loop decorations on the surface. Tight filament wrappings fasten staple fibers firmly onto the yarn stem to achieve excellent anti-friction, while filament loops decorate the yarn surface to yield a fancy appearance. However, intensive bending of looped and wrapping filaments are likely
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8

Zymovets, R. V. "IMAGE OF A WILD BOAR IN THE SCYTHIANS ANIMAL STYLE OF THE NORTHERN PONTIC REGION. INTERNAL EVOLUTION AND EXTERNAL IMPACTS." Archaeology and Early History of Ukraine 31, no. 2 (2019): 409–29. http://dx.doi.org/10.37445/adiu.2019.02.34.

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The article deals with relatively rare but important for Scythians animal style repertoire image of a wild boar. The sources of iconography and style of the image are analyzed, as well as his inner evolution and external influences from Central Asia, Near East, Iran and Greece. Full figure image of a wild boar in the Northern Black Sea region in archaic period are very rare unlike Central Asia and Southern Seberia, where these images were quite popular. Nevertheless some typical Asian styled figures (in a «sudden stop» pose or standing «on a hoof tips») are represented in Kuban’ and Dniepr For
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9

Adamuszek, Marta, Dan M. Tămaş, Jessica Barabasch, and Janos L. Urai. "Rheological stratification in impure rock salt during long-term creep: morphology, microstructure, and numerical models of multilayer folds in the Ocnele Mari salt mine, Romania." Solid Earth 12, no. 9 (2021): 2041–65. http://dx.doi.org/10.5194/se-12-2041-2021.

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Abstract. At laboratory timescales, rock salt samples with different composition and microstructure show variance in steady-state creep rates, but it is not known if and how this variance is manifested at low strain rates and corresponding deviatoric stresses. Here, we aim to quantify this from the analysis of multilayer folds that developed in rock salt over geological timescale in the Ocnele Mari salt mine in Romania. The formation is composed of over 90 % of halite, while distinct multiscale layering is caused by variation in the fraction of impurities. Regional tectonics and mine-scale fol
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10

Brown, D., S. Gluck, and J. Hartwig. "Structure of the novel membrane-coating material in proton-secreting epithelial cells and identification as an H+ATPase." Journal of Cell Biology 105, no. 4 (1987): 1637–48. http://dx.doi.org/10.1083/jcb.105.4.1637.

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Specialized proton-secreting cells known collectively as mitochondria-rich cells are found in a variety of transporting epithelia, including the kidney collecting duct (intercalated cells) and toad and turtle urinary bladders. These cells contain a population of characteristic tubulovesicles that are believed to be involved in the shuttling of proton pumps (H+ATPase) to and from the plasma membrane. These transporting vesicles have a dense, studlike material coating the cytoplasmic face of their limiting membranes and similar studs are also found beneath parts of the plasma membrane. We have r
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11

Morawski, Krzysztof. "O roli krisów w kulturze Indonezji i teoriach dotyczących ich powstania." Art of the Orient 1, no. 1 (2012): 181–200. http://dx.doi.org/10.15804/aoto201211.

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As the dagger kris is bound with many beliefs, myths, rituals and customs that are typical of Nusantara (Indonesia, Malaysia and the Philippines), it belongs to the symbols of the region. The kris is present on the majority of bigger islands of the Malay Archipelago and has many regional versions. It has a double-edged blade, straight or wavy, and dissymmetrical in the upper part. On both flats of the blade there is a bright, decorative pattern called the pamor (it contains some nickel), which is produced in a process similar to damascening. The hilt is figural or geometrical or sometimes of p
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12

Shen, Linhui, and Daping Weng. "Cluster Structures on Double Bott–Samelson Cells." Forum of Mathematics, Sigma 9 (2021). http://dx.doi.org/10.1017/fms.2021.59.

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Abstract Let $\mathsf {C}$ be a symmetrisable generalised Cartan matrix. We introduce four different versions of double Bott–Samelson cells for every pair of positive braids in the generalised braid group associated to $\mathsf {C}$ . We prove that the decorated double Bott–Samelson cells are smooth affine varieties, whose coordinate rings are naturally isomorphic to upper cluster algebras. We explicitly describe the Donaldson–Thomas transformations on double Bott–Samelson cells and prove that they are cluster transformations. As an application, we complete the proof of the Fock–Goncharov dual
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13

Šarić, Dragomir, Yilin Wang, and Catherine Wolfram. "Circle Homeomorphisms with Square Summable Diamond Shears." International Mathematics Research Notices, July 22, 2024. http://dx.doi.org/10.1093/imrn/rnae155.

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Abstract We introduce and study the space of homeomorphisms of the circle (up to Möbius transformations), which are in $\ell ^{2}$ with respect to modular coordinates called diamond shears along the edges of the Farey tessellation. Diamond shears are related combinatorially to shear coordinates and are also closely related to the $\log \Lambda $-lengths of decorated Teichmüller space introduced by Penner. We obtain sharp results comparing this new class to the Weil–Petersson class and Hölder classes of circle homeomorphisms. We also express the Weil–Petersson metric tensor and symplectic form
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14

Ben-Hur, Sharon, Shoshana Sernik, Sara Afar, et al. "Egg multivesicular bodies elicit an LC3-associated phagocytosis-like pathway to degrade paternal mitochondria after fertilization." Nature Communications 15, no. 1 (2024). http://dx.doi.org/10.1038/s41467-024-50041-5.

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AbstractMitochondria are maternally inherited, but the mechanisms underlying paternal mitochondrial elimination after fertilization are far less clear. Using Drosophila, we show that special egg-derived multivesicular body vesicles promote paternal mitochondrial elimination by activating an LC3-associated phagocytosis-like pathway, a cellular defense pathway commonly employed against invading microbes. Upon fertilization, these egg-derived vesicles form extended vesicular sheaths around the sperm flagellum, promoting degradation of the sperm mitochondrial derivative and plasma membrane. LC3-as
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15

Crosby, Alexandra Lara, Ilaria Vanni, Sarah Jane Jones, and Holly O’Neil. "Visually Communicating Artificial Urban Wetlands." M/C Journal 27, no. 6 (2024). http://dx.doi.org/10.5204/mcj.3113.

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Introduction Urban wetlands in Australia are under threat, yet they provide benefits for climate change mitigation, pollution reduction, habitat provision, and socioecological connection. In what is now known as Sydney’s inner south and inner west, wetlands were significant places maintained by Aboriginal peoples for millennia (Foster). The violent colonial history that shaped Sydney unfolded along its extensive and dynamic wetlands and connecting waterways. Water was enclosed, drained, dammed, and channelled underground to service the city’s growth. “Unproductive swamps” were filled in for fa
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