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Wyświetlanie 1-4 z 4
Tytuł:
The CFD modeling in bioreactor tracer studies
Autorzy:
Zima, P.
Powiązania:
https://bibliotekanauki.pl/articles/1933153.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska
Tematy:
mathematical modeling
pollutant migration
reactor hydraulics
advection-dispersion equation
tracer studies
Opis:
This paper presents the effects of dispersion on predicting longitudinal tracer concentration profiles in an activated sludge bioreactor located at the Wschód Waste-Water Treatment Plant in Gdansk. The aim of this study has been to use the one-dimensional advection-dispersion equation to simulate a non-active substance flow (based on the measured tracer concentration). The simulation results were compared with those obtained in the traditional tanks-in-series approach, commonly used in designing biological reactors. The dispersion coefficient was calculated from a statistical formula based on differences in the tracer concentration distributions at two sampling points. The study has shown that the numerical simulation using the one-dimensional tracer migration equation yields better results than the tanks-in-series model in predicting longitudinal tracer concentration profiles. This paper is an in-troduction to the study of reactive substances in activated sludge bioreactors.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2007, 11, 4; 439-447
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Socialist Mobilities: Crossing New Terrains in Vietnamese Migration Histories
Autorzy:
Schwenkel, Christina
Powiązania:
https://bibliotekanauki.pl/articles/498663.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Vietnam
socialist migration
architectural training
educational exchanges
international solidarity
Vietnamese studies
Opis:
This paper examines the waves of migration between Vietnam and fraternal socialist countries in the Eastern bloc from the 1950s until the collapse of the Soviet Union. Arguing for a collectivist migration framework, it compares and contrasts the various generations of architecture student migrants, their multidirectional movements, and, for most, their repatriation to Vietnam. There is no single uniform narrative of socialist mobility. Each wave was driven by different war and postwar exigencies, and the groups of migrants who left Vietnam confronted a range of unique challenges related to such factors as location, gender and assignment overseas (i.e. student or worker). This paper has two objectives: first, to decentre the West from hegemonic discussions of Vietnamese diasporas in order to advance a broader understanding of the historical development of overseas Vietnamese communities in what are now post-socialist countries; and second, to complicate the story of Vietnamese migrants in Central and Eastern Europe by arguing that past socialist mobilities are constitutive of much capitalist-driven migration today. An examination of different socialist migration trajectories and experiences of living overseas across generations provides important insights into how socioeconomic and political changes that came about in Vietnam with the fall of the Berlin Wall shaped the personal lives and professional futures of returnees and their kin. It also serves to bring the study of socialist migration histories more deeply into the epistemological and methodological fold of contemporary Vietnamese studies.
Źródło:
Central and Eastern European Migration Review; 2015, 4, 1; 13-25
2300-1682
Pojawia się w:
Central and Eastern European Migration Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Migration and Modernisation – an Alternative. Polemic essay with Marek Okólski’s article “Modernising Impacts of Emigration”
Migracja i modernizacja – alternatywa. Esej polemiczny z artykułem Marka Okólskiego pt. ‚Modernizacyjne oddziaływania emigracji’
Autorzy:
Piekut, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/427334.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
migration
modernisation
polemic
postcolonial studies
decolonial option
migracja
modernizacja
polemika
studia postkolnialne
opcja dekolonialna
Opis:
In this polemic essay I critically engage with the migration-modernisation argument presented by Marek Okólski in his article “Modernising Impacts of Emigration” published in “Studia Socjologiczne”, issue 3, volume 206. By employing postcolonial and decolonial theory I offer an alternative voice in the discussion on theorising migration. The polemic attempts to question the prevailing thinking on the migratory situation in Poland (patterns of immigration and emigration) anchored in the rhetoric of modernity and, by doing so, provoke further discussion on theorising and researching migration in Poland.
W niniejszym eseju polemicznym pragnę krytycznie odnieść się do tezy migracji-modernizacji, która została przedstawiona w artykule Marka Okólskiego „Modernising Impacts of Emigration” opublikowanym w „Studiach Socjologicznych”, numer 3, tom 206. Moja wypowiedź opiera się na perspektywie studiów postkolnialnych i dekolonialnych oraz stanowi alternatywny głos w dyskusji dotyczącej konceptualizacji migracji. W polemice pragnę zakwestionować dominujące myślenie o procesach migracyjnych w Polsce (wzorach emigracji i imigracji), które osadzone jest w retoryce modernizacyjnej, tym samym, pragnę sprowokować dalszą dyskusję na temat stosowanych podejść teoretycznych i empirycznych w badaniach migracyjnych w Polsce.
Źródło:
Studia Socjologiczne; 2014, 1(212); 157-169
0039-3371
Pojawia się w:
Studia Socjologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New perspectives of studies in the Przeworsk culture in the Lublin region – on the example of the results of interdisciplinary studies of site 5 in Nieszawa Kolonia, Opole Lubelskie district, Lublin voivodship
Autorzy:
Stasiak-Cyran, Marta
Powiązania:
https://bibliotekanauki.pl/articles/1385888.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Przeworsk culture
settlement
Roman Period
early Migration Period
Lublin region
interdisciplinary studies
food economy
pottery
Dacian circle influences
Opis:
The last twenty years have brought discoveries which provide a large number of sources concerning the archaeology of the Roman Period in the Lublin region. The interdisciplinary studies related to site 5 in Nieszawa Kolonia, Opole Lubelskie district, Lublin region, Poland, have generated a substantial part of these new sources. The multi-aspectual analysis of archaeological and biological sources allowed us to characterize of the economy of the dwellers of the settlement which was constituted by agriculture, animal husbandry and fishing. The relative chronology of the settlement was established, and the first stage of its functioning was determined as belonging to phase B2, until phase C1a inclusive. The second stage of the utilisation of the settlement is dated to phase C3-D1. Three instances of radiocarbon dating confirm the chronological frame established by relative dating. The presented analysis of selected archaeological sources from site 5 in Nieszawa Kolonia, especially of ceramic material, seems to confirm the possibility that in the early Roman period, in the Lublin region, especially in its western part, infiltration of Dacian cultural elements into the Przeworsk environment took place. It is undeniable that the chronology of the settlement in Nieszawa Kolonia extends beyond the established time frame assumed for the functioning of the Przeworsk culture in the Lublin region. It is possible that in the late Roman Period the history of the settlement in question is part of a series of changes that took place in the areas of Barbaricum and Roman provinces. Some of the settlers of northern origin could have returned to the former settlements. The settlement in the mesoregion of the Lesser Poland Gorge of the Vistula is of particular importance for the revision of previous interpretations of the cultural changes taking place in the Lublin region in the Roman Period and in the early Migration Period.
Źródło:
Acta Archaeologica Carpathica; 2020, 55; 111-136
0001-5229
2719-4841
Pojawia się w:
Acta Archaeologica Carpathica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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