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The aim of the paper is to proove that the local Euroregional policies of memory in contemporary Cieszyn (Teschen) Silesia are dominated by unconscious conceptual nationalism. It is a tacit tendency to subordinate all contemporary reproduced images of the past concerning the times before 1920 (division of the former Duchy of Teschen between Poland and Czechoslovakia) to the current Polish-Czech border. The consequences of such a projection of the current political division on the institutionally reproduced popular representations of the past and present are the following: 1. the role of German language and culture in the past of Cieszyn (Teschen) Silesia is strongly underestimated; 2. the contemporary Czech part of the devided region is regarded as Czech always (in linguistical, cultural and political sense), while the contemporary Polish part of the region is regarded as Polish always (in linguistical, cultural and political sense); 3. contemporary local Euroregional institutions usually avoid narratives and representations of the past and present if they are linked with any concepts of Polish language or Polish identity on the Czech side of the current border. This is a kind of conceptual demarcation of “everything” in Cieszyn (Teschen) Silesia which can be regarded as a result of local Euroregional political correctness., B. Anderson, Wspólnoty wyobrażone. Rozważania o źródłach i rozprzestrzenianiu się nacjonalizmu, przeł. Stefan Amsterdamski, Kraków 1997. M. Billig: Banalny nacjonalizm, przeł. M. Sekerdej, Kraków 2008. G. Błahut, Mapy mentalne jako wyobrażenia miejskich obszarów kulturowych, „Studia Etnologiczne i Antropologiczne“ 2013 nr 13, s. 47-56. P. Bourdieu, Zmysł praktyczny, przeł. M. Falski, Kraków 2008. M. Douglas, Czystość i zmaza, przeł. M. Bucholc, Warszawa 2007. H.-G. Gadamer: Problém dějinného vědomí, przeł. J. Němec i J. Sokol, Praha 1994. C. Geertz, Zastane światło. Antropologiczne refleksje na tematy filozoficzne, przeł. Z. Pucek, Kraków 2003. D. Howarth, Dyskurs, przeł. A. Gąsior-Niemiec, Warszawa 2008. K. Jaspers, Die Schuldfrage. Ein Beitrag zur Deutschen Frage, Heidelberg 1946. S. Jäger: Kritische Diskursanalyse. Eine Einführung, Münster 2004. K. D. Kadłubiec, W cieszyńskim mateczniku, Czeski Cieszyn 2015. K. D. Kadłubiec, Opowiado Anna Chybidziurowa, Bystřice nad Olší 2017. K. D. Kadłubiec, Śpiywo Anna Chybidziurowa a jeji sómsiedzi, Bystřice 2018. K. D. Kadłubiec, Od Cieszyna do Bogumina. Od Těšína k Bohumínu, Bystřice 2019. J. Kajfosz, Między traumą a reifikacją, czyli o estetyzacji reprezentacji przeszłości i schematach pamięci społecznej. „Sprawy Narodowościowe: Seria Nowa“ 2020 nr 52, s. 6-10. D. Lowenthal, The Past is a Foreign Country, Cambridge 1985. J. F. Lyotard, Kondycja ponowoczesna. Raport o stanie wiedzy, przeł. M. Kowalska i J. Migasiński, Warszawa 1997. P. Łysek: Marynka, cera gajdosza, Warszawa 1982. K. Marcol, Karnawał na granicy – widowisko a obraz świata współczesnych mieszkańców pogranicza śląskocieszyńskiego. „Journal of Urban Ethnology“ 2018 nr 18, s. 43-44. W. Ong, Psychodynamika oralności. w: G. Godlewski (red.), Antropologia słowa. Zagadnienia i wybór tekstów, Warszawa 2004. K. Piegza: Sękaci ludzie, Czeski Cieszyn 2019. A. Schaff, Język a poznanie, Warszawa 1964.

A latent heat storage system for the production of superheated steam at >21 bar and 300 °C with a capacity of over 1.5 MWh has been developed, designed and is in build. The storage unit concept uses extended finned tubes with a high packing factor and sodium nitrate as the storage material, which changes phase from liquid to solid during charging. The storage unit is an upscaling from smaller designs, and the upper and lower headers were adapted for the operating conditions and upscaling. The storage contains 852 finned tubes, each ca. 6 m in tube length, so that a semi-automated assembly method was necessary for build. This large-scale storage system is being integrated into an operational process, from which real integration and operation experience can be gained. The integration is in a cogeneration plant in Saarland, Germany and the latent heat storage system serves as a backup to a gas turbine for steam generation. The storage design and build is discussed. Topics such as the manufacturing of finned-tubes, upscaling of headers as well as relevant permitting processes are critical for the development of large-scale latent heat storages for industrial as well as CSP and solar process heat applications.

My doctoral dissertation examines the delimitation of the Slovak - Polish border in the interwar period and the impact of the cession of the parts of the Slovak districts in Orava and Spiš to Poland on the relations between Czecho-Slovakia and Poland, Czechoslovakia and Poland, and Slovakia and Poland. The Tešín question dominated the border delimitation and the relations and the Orava and Spiš questions and the delimitation of the Slovak - Polish border received much less scholarly attention. While acknowledging the complexity of the issue under consideration, this work attempts to make small contribution towards filling existing gap in historiography. The majority of research work occurred at the diplomatic archives in Prague, Paris and Warsaw (Archives of the Foreign Ministry, Archives diplomatiques and Archiwum Akt Nowych). Some primary research also took place in Bratislava, Warsaw, Washington and Ottawa. This work seeks to interpret primary sources in an innovative way which demonstrates influence exerted by the Orava and Spiš questions on the relations between Czecho-Slovakia and Poland, Czechoslovakia and Poland, Slovakia and Poland, Slovaks and Poles, Slovaks and Czechs, and Czechs and Poles. Effectiveness of the Orava and Spiš questions to carve out their own constituencies and to communicate the message of their populations were limited or enhanced by contemporary configuration of international and internal factors. The Orava and Spiš border delimitations in the Slovak-Polish border and their consequences for the Slovak-Czech-Polish relations, remain largely neglected by the scholars in the English and French historiographies. The Orava and Spiš border delimitations play an important role in understanding of Slovak-Polish-Czech relations and international relations in the interwar and post World War II periods. The questions posed by examining the Orava and Spiš border delimitations are as relevant in Schengen Europe as they were almost a century ago.