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Abstract

Objective: Self-report questionnaire is informative to assess general hearing disability. The aims of this study were to investigate the reliability of Turkish version of spatial hearing questionnaire (SHQ) and to analyze the validity of the SHQ by the correlation with speech, spatial, and qualities of hearing questionnaire (SSQ) and Turkish matrix sentence test (TMST).
Methods: The first part of the study was the psychometric properties of the SHQ with 192 participants (137 with normal hearing, 55 with hearing loss). In the second and main part of the study, we applied two questionnaires (SHQ and SSQ) and TMST to people other than those included in the first part ofthe study (88 participants with bilateral sensorineural hearing loss). We compared the results of these two questionnaires and the TMST with the speech discrimination (SD) scores.
Results: Turkish spatial hearing questionnaire’s internal consistency was 0.94 and 0.97 for individuals with normal hearing and for individuals with hearing loss, respectively. Moderate, positive, statistically significant correlation was observed between the SHQ and SSQ (r = 0:606, p = 0:001 in individuals with hearing loss who do not wear any hearing aid, and r = 0:627, p = 0:001 in hearing aid users), and SHQ and SD (r = 0:561, p = 0:032 in hearing aid users). According to TMST, moderate, positive, statistically significant correlation was found between SSQ and adaptive TMST in individuals with hearing loss who do not wear any hearing aid (r = 0:330, p = 0:033 for S0N90 and r = 0:364, p = 0:018 for S0N270).
Conclusions: Turkish SHQ is a valid and reliable questionnaire for assessing hearing functions. SHQ, SSQ, and TMST are clinically beneficial measuring tools in planning the process of hearing rehabilitation and follow-up.

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Authors and Affiliations

Bünyamin Çildir
1
Suna Tokgöz-Yilmaz
2
Gonca Sennaroğlu
3

  1. Ankara Yıdırım Beyazıt University, Health Sciences Faculty, Speech Language Therapy Department, Ankara, Turkey
  2. Ankara University, Health Sciences Faculty, Audiology Department, Ankara, Turkey
  3. Hacettepe University, Health Sciences Faculty, Audiology Department, Ankara, Turkey
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Abstract

This paper deals with the finite element analysis of the demagnetization process of the line start permanent magnet synchronous motor. Special attention has been paid to demagnetization risk assessment after resynchronization during a short-term supply power outage. The current and torque waveforms have been determined assuming the difference depending initial rotor position angle. It has been demonstrated that the highest demagnetization risk occurs when resynchronization (motor reclosing) is performed whe induced electromotive forces are in anti-phase to the supply voltage waveforms. The effect of cage winding resistance on the risk of demagnetization is examined and discussed.

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Authors and Affiliations

Tomasz Zawilak
ORCID: ORCID
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Abstract

Starting from a subjective viewpoint on the decreasing interest in invertebrate fossil taxonomy, this essay discusses its importance in palaeobiological studies exemplified with cases from the palaeobiogeography and palaeoecology of rugose corals, and aims at provoking a discussion on the topic. The possible causes of this negative declining trend include inherent problems of palaeontological taxonomy, and changing systems in science and higher education.
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Bibliography


Arrigoni, R., Berumen, M.L., Chen, C.A., Terraneo, T.I., Baird, A.H., Payri, C. and Benzoni, F. 2016. Species delimitation in the reef coral genera Echinophyllia and Oxypora (Scleractinia, Lobophylliidae) with a description of two new species. Molecular Phylogenetics and Evolution, 105, 146–159.
Baird, A.H., Hoogenboom, M.O. and Huang, D. 2017. Cyphastrea salae, a new species of hard coral from Lord Howe Island, Australia (Scleractinia, Merulinidae). ZooKeys, 662, 49–66.
Bamber, E.W., Rodríguez, S., Richards, B.C. and Mamet, B. 2017. Uppermost Viséan and Serpukhovian (Mississippian) rugose corals and biostratigraphy. Canadian Cordillera. Palaeontographica Canadiana, 36, 1–169.
Berkowski, B. and Zapalski, M.K. 2018. Large dwellers of the Silurian Halysites biostrome: rhizosessile life strategies of cystiphyllid rugose corals from the Llandovery of Gotland. Lethaia, 51, 581–595.
Billings, E. 1858. Report for the year 1857. Report of Progress, 147–192. Geological Survey of Canada; Montreal.
Cowman, P.F., Quattrini, A.M., Bridge, T.C.L., Watkins-Colwell, G.J., Fadli, N., Grinblat, M., Roberts, T.E., McFadden, C.S., Miller, D.J. and Baird, A.H. 2020. An enhanced target-enrichment bait set for Hexacorallia provides phylogenomic resolution of the staghorn corals (Acroporidae) and close relatives. Molecular Phylogenetics and Evolution, 153, 106944.
Dana, J.D. 1846–1849. Zoophytes. United States Exploring Expedition during the years 1838–1842, 7, 740 pp. Lea and Blanchard; Philadelphia.
Fedorowski, J. 1980. Some aspects of coloniality in corals. Acta Palaeontologica Polonica, 25, 429–437.
Fedorowski, J. 1986. The rugose coral faunas of the Carboniferous/ Permian boundary interval. Acta Palaeontologica Polonica, 31, 394–402.
Fedorowski, J. 1997. Diachronism in the development and extinction of Permian Rugosa. Geologos, 2, 59–164.
Fedorowski, J. 2019. Bashkirian Rugosa (Anthozoa) from the Donets Basin (Ukraine). Part 7. The Family Neokoninckophyllidae Fomichev, 1953, with a preliminary revision of Moscovian taxa. Acta Geologica Polonica, 69, 59–81.
Fedorowski, J. and Bamber, E.W. 2007. Remarks on lithostrotionid phylogeny in western North America and western Europe. In: Hubman, B. and Piller, W.E. (Eds), Fossil corals and sponges. Proceedings of the 9th International Symposium on Fossil Cnidaria and Porifera, Graz, 2003. Österreichische Akademie der Wissenschaften. Schriftenreihe der Erdwissenschaftlichen Kommissionen, 17, 251–273.
Fedorowski, J., Bamber, E.W. and Richards, B.C. 2019. Bashkirian rugose corals from the Carboniferous Mattson Formation in the Liard Basin, northwest Canada – stratigraphic and paleobiogeographic implications. Acta Palaeontologica Polonica, 64, 851–870.
Fedorowski, J., Bamber, E.W. and Stevens, C.H. 2007. Lower Permian colonial rugose corals, Western and Northwestern Pangaea: Taxonomy and distribution, 231 pp. National Research Council of Canada Research Press; Ottawa.
Garcia-Bellido, D.C. and Rodríguez, S. 2005. Palaeobiogeographical relationships of poriferan and coral assemblages during the late Carboniferous and the closure of the western Palaeotethys Sea-Panthalassan Ocean connection. Palaeogeography, Palaeoclimatology, Palaeoecology, 219, 321– 331.
Gómez-Herguedas, A. and Rodríguez, S. 2009. Paleoenvironmental analysis based on rugose corals and microfacies: a case study at La Cornuda section (Early Serpukhovian, Guadiato Area, SW Spain). Lethaia, 42, 39–54.
Groot, G. de 1963. Carboniferous corals of northern Palencia (Spain). Leidse Geologische Mededelingen, 29, 1–124.
Hill, D. 1981. Coelenterata, Supplement 1, Rugosa and Tabulata. In: Teichert, C. (Ed.), Treatise on Invertebrate Paleontology, Part F, 762 pp. Geological Society of America and University of Kansas Press; Lawrence.
Humboldt, A. v. and Bonpland, A. 1805–1829. Voyage aux régions équinoxiales du Nouveau Continent, fait de 1799 à 1804. Maze; Paris.
Kelly, W.A. 1942. Lithostrotionidae in the Rocky Mountains. Journal of Paleontology, 16, 351–361.
Kitahara, M.V., Capel, K.C.C. and Migotto, A.E. 2020. Coenocyathus sebroecki sp. nov.: a new azooxanthellate coral (Scleractinia, Caryophylliidae) from southeastern Brazil. Marine Biodiversity, 50 (4), 1–9.
Kitahara, M.V., Fukami, H., Benzoni, F. and Huang, D. 2016. The new systematics of Scleractinia: integrating molecular and morphological evidence. In: Goffredo, S. and Dubinsky, Z. (Eds), The Cnidaria, past, present and future: The world of Medusa and her sisters, 41–59. Springer; Cham.
Lamarck, J.-B. M. de. 1816. Histoire naturelle des animaux sans vertèbres. Tome second, 568 pp. Verdière; Paris.
Linnæus, C. 1766–1767. Systema naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Ed. 12. 1, Regnum Animale, 1 and 2, pp. 1–532 [1766], pp. 533–1327 [1767]. Laurentii Salvii; Holmiae.
Lonsdale, W. 1845. Description of some characteristic Palaeozoic corals from Russia, Vol. 1. In: Murchison, R.I., Verneuil, E. de and Keyserling, A. v. (Eds), The Geology of Russia in Europe and the Ural Mountains, 591–634. Murray; London.
McCoy, F. 1849. On some new genera and species of Carboniferous corals and Foraminifera. Annals and Magazine of Natural History, Series 2, 3, 1–20.
Milne Edwards, H. and Haime, J. 1848. Mémoire 2. Monographie des turbinolides. Annales des Sciences Naturelles, Zoologie, Series 3, 9, 211–344.
Milne Edwards, H. and Haime, J. 1851. A monograph of British fossil corals, 322 pp. Palaeontographical Society of London; London.
Minato, M. and Kato, M. 1965a. Waagenophyllidae. Journal of the Faculty of Sciences, Hokkaido University. Series 4. Geology and Mineralogy, 12, 1–241.
Minato, M. and Kato, M. 1965b. Durhaminidae. Journal of the Faculty of Sciences, Hokkaido University. Series 4. Geology and Mineralogy, 13, 13–86.
Oliver, W.A. Jr. 1976. Presidential address. Biogeography of Devonian rugose corals. Journal of Paleontology, 50, 365–373.
Oliver, W.A. Jr. and Pedder, A.E.H. 1979. Biogeography of Late Silurian and Devonian rugose corals in North America. In: Gray, J. and Boucot, A.J. (Eds), Historical biogeography, plate tectonics and changing environment, 131–145. Oregon State University Press; Cornvallis.
Orbigny, A. d’ 1852. Cours élémentaire de paleontology et géologie stratigraphique. Vol. 2, 1146 pp. Victor Masson; Paris.
Paz-García, D.A., Hellberg, M.E., García-de-León, F.J. and Balart, E.F. 2015. Switch between morphospecies of Pocillopora corals. The American Naturalist, 186 (3), 434–440.
Rodríguez, S. 1984. Corales rugosos del este des Asturias. Unpublished Ph.D. thesis, 528 pp. Departamento de Paleontologia, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid.
Rodríguez, S. and Kullmann, J. 1999. Rugose corals from the upper member of the Picos de Europa Formation (Moscovian, Cantabrian Mountains, NW Spain). Palaeontographica, Abteilung A, 252, 23–92.
Said, I., Rodríguez, S., Somerville, I.D. and Cózar, P. 2011. Environmental study of coral assemblages from the Upper Viséan Tizra Formation (Adarough Area, Morocco): implication for Western Palaeotethys biogeography. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 260, 101–118.
Saville Kent, W. 1871. On some new and little-known species of madrepores, or stony corals, in the British Museum collection. Proceedings of the Scientific Meetings of the Zoological Society of London, 1871, 275–286.
Scotese, C.R. 2001. Atlas of Earth History. Vol. 1. Paleogeography, 52 pp. PALEOMAP Project; Arlington.
Sorauf, J.E. and Kissling, D.L. 2012. Rugosans immured in Silurian Paleofavosites; Brassfield Formation (Llandovery) of Ohio. Geologica Belgica, 5, 220–225.
Torsvik, T.H. and Cocks, L.R.M. 2017. Earth History and Palaeogeography, 317 pp. Cambridge University Press; Cambridge.
Vinn, O. and Mõtus, M.A. 2014. Endobiotic rugosan symbionts in stromatoporoids from Sheinwoodian (Silurian) of Baltica. Plos One, 9, 1–6.
Wang, H.C. 1950. A revision of the Zoantharia Rugosa in the light of their minute skeletal structures. Philosophical Transactions of the Royal Society of London. Series B Biological Sciences, 611, 175–264.
Wedekind, R. 1927. Die Zoantharia Rugosa von Gotland (bes. Nordgotland), Nebst Bemerkungen zur Biostratigraphie des Gotlandium. Sveriges Geologiska Undersökning, 19, 1–94.
Wu, W.S. and Zhou, K.J. 1982. Upper Carboniferous corals from Kalping and Aksu, Xinjiang. Academia Sinica. Nanjing Institute of Geology and Palaeontology, Bulletin, 1982, 213– 239. [In Chinese with English summary]
Ziegler, P.A. 1988. Laurussia – the old red continent. In: Mc- Millan, N.J., Embry, A.F. and Glass, D.J. (Eds), Devonian of the World. 1. Regional synthesis. Proceedings of the Second International Symposium on the Devonian System, 5–48. Canadian Society of Petroleum Geologists; Calgary.
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Authors and Affiliations

Jerzy Fedorowski
1

  1. Institute of Geology, Adam Mickiewicz University, Bogumiła Krygowskiego 12, 61-680 Poznań, Poland
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Abstract

Low manganese and sulfur gray irons were produced by adding inoculant base Fe-Si with small amounts of Al and Ca in the ladle. The effect of the cast thickness, inoculant amount and shakeout time of the green sand molds were studied on the graphite flake formation by microscopically techniques. A thermodynamic analysis was carried out for the cast iron produced with the FactSage 7.2 software. Stability phase diagrams were obtained for both gray cast irons to different manganese (0.1 to 0.9 wt.%) and sulfur (0.01 to 0.12 wt.%) amounts to 1150°C. It was shown that lower amounts of manganese and sulfur allow forming the 3Al2O3·2SiO2, Al2O3, and ZrO2 solid compounds. The thermodynamic results match with those obtained by SEM-EDS. It is possible to form MnS particles in the liquid phase when the solubility product (%Mn) × (%S) equals 0.042 and 0.039 for heats A and B, respectively.

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Authors and Affiliations

G. Reyes-Castellanos
A. Cruz-Ramírez
E. Colin-García
V.H. Gutiérrez-Pérez
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Abstract

An attempt to create a written Mongolian language based on the Cyrillic script is linked to the missionary activities of Archbishop Nil (1799-1874) among the Buryat Mongols. On his initiative, several Christian liturgical books were translated into Mongolian and printed in St. Petersburg. However, Nil and his assistants did not take into account the discrepancy between written and spoken Mongolian language and transcribed every letter of the Mongolian written language with corresponding Cyrillic letters and thus did no in any way make the texts closer to the spoken language.

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Authors and Affiliations

Vladimir Uspensky

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