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    Wyświetlanie 1-7 z 7
    Tytuł:
    Numerical study of a cone mill for emulsion preparation: Hydrodynamics and population balance modelling
    Autorzy:
    Lupieri, Guido
    Bagkeris, Ioannis
    Janssen, Jo J.M.
    Kowalski, Adam J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086806.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cone mill
    CFD
    hydrodynamics
    population balance model
    młyn stożkowy
    hydrodynamika
    model bilansu populacji
    Opis:
    The work concerns numerical simulations of a cone mill used for emulsion preparation. Hydrodynamics, power consumption and population balance are investigated for various operating conditions at high phase volume emulsions and for different rheologies. Cone mills are usually simplified as a simple gap between rotor and stator but by increasing the complexity of the geometry till it represents the commercial device identifies a wealth of additional features such as recirculation zones above (which enhance breakage) and below (which allow for coalescence) the rotor-stator gap. Two separate sets of population balance modelling constants are required to capture all the experiment results – even with the most complex geometries. Some suggestions are made for improvements and further studies will consider other rotor-stator devices.
    Źródło:
    Chemical and Process Engineering; 2021, 42, 4; 295--320
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Public Support for Large Companies to Prevent the Effects of the Covid-19 Pandemic – Study Based on the Example of the Guarantee of the PLG FGP Guarantee Line – Legal and Economic Aspects
    Autorzy:
    Kowalski, Dariusz
    Zając, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/36080854.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    large enterprises
    Covid-19 pandemic
    public support
    SME sector
    guarantee
    Opis:
    The purpose of the article/hypothesis: The purpose of the article is to determine whether, taking into account the current legal framework determining the state role in the economy, it is advisable to support large enterprises in relation to preventing the effects of the COVID-19 pandemic. The analysis will be conducted based on one of the types of guarantees - PLG FGP guarantee line. Methodology: In order to achieve the assumed goals, the analysis was based on non-reactive research, consisting in the assessment of available information. It included studies of normative acts, official statistical data and industry reports and analyses. Two basic research methods were used, namely legal dogmatic and comparative analyses. Results of the research: Based on the conducted research, it can be concluded that taking into account the characteristics of economic difficulties resulting from the COVID-19 pandemic (i.e. a decrease in demand for goods and services, reduced mobility of the population, limited supply caused by disruption of supply chains and absence of employees at the workplace), it is justified to support sector of large enterprises, because these problems concern both the SME sector and large enterprises to a similar extent. However, it is reasonable to direct the aid because financing was also used by enterprises that were not affected by the crisis.
    Źródło:
    Finanse i Prawo Finansowe; 2023, 4, 40; 7-22
    2391-6478
    2353-5601
    Pojawia się w:
    Finanse i Prawo Finansowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sustainable development in electromobility
    Zrównoważony rozwój w elektromobilności
    Autorzy:
    Kowalski, Daniel Jan
    Depta, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/777731.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Łódzka. Wydawnictwo Politechniki Łódzkiej
    Tematy:
    sustainable development
    electromobility
    electric vehicles
    zrównoważony rozwój
    elektromobilność
    pojazdy elektryczne
    Opis:
    The article presents the importance of compliance with the principles of sustainable development in the automotive industry. Explains the term electromobility, electromobility development plan and the origin, meaning and principles of the concept of "sustainable development" with an visualisation of its validity on examples. The concept of sustainable mobility is discussed on the example of the BMW Group. The paper also presents the speed of development of the electric car industry in the world since 2011, along with their forecasts for the future.
    W artykule przedstawiono znaczenie zgodności z zasadami zrównoważonego rozwoju w branży motoryzacyjnej. Wyjaśniono termin elektromobilność, plan rozwoju elektromobilności i pochodzenie, znaczenie oraz zasady koncepcji „zrównoważonego rozwoju” z wizualizacją jego ważności na przykładach. Koncepcja zrównoważonej mobilności została omówiona na przykładzie grupy BMW. Artykuł przedstawia również szybkość rozwoju branży samochodów elektrycznych na świecie od 2011 roku wraz z ich prognozami na przyszłość.
    Źródło:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Łódzka; 2019, 73; 69-79
    0137-2599
    Pojawia się w:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Łódzka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of the roadload application in geographical studies of flows generated by individual modes of transport
    Autorzy:
    Borowska-Stefańska, Marta
    Kowalski, Micha
    Wiśniewski, Szymon
    Domagalski, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1841142.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    RoadLoad application
    Dijkstra's algorithm
    transport geography
    modes of transport
    spatial mobility
    transport accessibility
    aplikacja RoadLoad
    algorytm Dijkstry
    geografia transportu
    rodzaje transportu
    mobilność przestrzenna
    dostępność transportowa
    Opis:
    The purpose of this article is to present the authors' own software for predicting changes in the density and directions of traffic flows and to compare overall results of research on transport accessibility with the results returned in the study of transport accessibility conducted with the software (isochronic accessibility). Developed for research purposes, the authors' application is based on Dijkstra's algorithm, which is classified as one of the greedy ones and does not always return optimum results, even though it is considered to be generally accurate. In the course of the research, it was stated that the implementation of Dijkstra's algorithm in the RoadLoad tool is suitable for studying and prognosing phenomena, under the assumption that there are detailed data on the point of departure and destination for each trip. The tool enables us to research a spatial (cumulated values of network load) as well as time-spatial (network load at virtually any time) dimension of the phenomenon. It cannot be applied, however, without the knowledge of the transport behavior characteristics of the users of the road system.
    Źródło:
    Transport Problems; 2020, 15, 4, cz. 2; 227-240
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of the roadload application in geographical studies of flows generated by individual modes of transport
    Autorzy:
    Borowska-Stefańska, Marta
    Kowalski, Micha
    Wiśniewski, Szymon
    Domagalski, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1841150.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    RoadLoad application
    Dijkstra's algorithm
    transport geography
    modes of transport
    spatial mobility
    transport accessibility
    aplikacja RoadLoad
    algorytm Dijkstry
    geografia transportu
    rodzaje transportu
    mobilność przestrzenna
    dostępność transportu
    Opis:
    The purpose of this article is to present the authors' own software for predicting changes in the density and directions of traffic flows and to compare overall results of research on transport accessibility with the results returned in the study of transport accessibility conducted with the software (isochronic accessibility). Developed for research purposes, the authors' application is based on Dijkstra's algorithm, which is classified as one of the greedy ones and does not always return optimum results, even though it is considered to be generally accurate. In the course of the research, it was stated that the implementation of Dijkstra's algorithm in the RoadLoad tool is suitable for studying and prognosing phenomena, under the assumption that there are detailed data on the point of departure and destination for each trip. The tool enables us to research a spatial (cumulated values of network load) as well as time-spatial (network load at virtually any time) dimension of the phenomenon. It cannot be applied, however, without the knowledge of the transport behavior characteristics of the users of the road system.
    Źródło:
    Transport Problems; 2020, 15, 4, cz. 2; 227--240
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary report on the microvertebrate faunal remains from the Late Triassic locality at Krasiejów, SW Poland
    Autorzy:
    Kowalski, Jakub
    Bodzioch, Adam
    Janecki, Piotr A.
    Ruciński, Maciej R.
    Antczak, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/191960.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    microvertebrates
    archosauromorphs
    fish
    amphibians
    Triassic
    Keuper
    Polska
    Opis:
    Fossil vertebrate remains from the Keuper unit in the vicinity of the village of Krasiejów have been analyzed for almost two decades. However, the main goal of these works was focused mainly on large vertebrates. Here the authors present the first description of microvertebrate fossils from that site. The collection of around 5,000 specimens is mainly comprised of teeth and scales. The most numerous remains belong to osteichthyans: dipnoans (Ptychoceratodus and cf. Arganodus), palaeoniscids, semionotids, redfieldiids and chondrichthyans, such as Lonchidion sp., which is the first indisputable record of that genus in the Upper Triassic of Poland and the first shark at the Krasiejów locality. Tetrapod fossils consist of temnospondyl amphibians, rhynchocephalian lepidosauromorphs and archosauromorphs. Among them, temnospondyl amphibian remains are the most numerous and are represented mostly by Metoposaurus. However, on the basis of diversity in tooth morphotypes, the occurrence of other taxa cannot be excluded. Rhynchocephalians are composed of 7 fragmentary jaw morphotypes with dentition, which could indicate high taxonomic diversity (cf. Planocephalosaurus, cf. Diphydontosaurus and cf. Clevosaurus). The most varied fossil group was assigned to the archosauromorphs. The authors can distinguish at least 19 teeth morphotypes, which show similarities to the dentition of: protorosaurians (cf. Tanystropheidae), pseudosuchians (cf. Protecovasaurus, cf. Revueltosaurus), early crocodylomorphs and basal sauropodomorph dinosaurs. The first occurrence of a theropod dinosaur and cynodonts at the Krasiejów locality is also recorded. However, their remains are very rare. These new records show a high taxonomic diversity at the Krasiejów locality that contributes to our deeper understanding of Late Triassic ecosystem of Poland.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2019, 89, 3; 291-305
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geochemistry of a sedimentary section at the Wąwelnica archaeological site, Szczecin Hills (Western Pomerania)
    Autorzy:
    Okupny, Daniel
    Borówka, Ryszard K.
    Cedro, Bernard
    Sławińska, Joanna
    Tomkowiak, Julita
    Michczyński, Adam
    Kozłowska, Dorota
    Kowalski, Krzysztof
    Sedlik, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1366052.pdf
    Data publikacji:
    2020-12-24
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    biogenic accumulation basins
    drainless areas
    geochemistry
    human impact
    Holocene
    Szczecin Hills
    Opis:
    The results of geochemical assays on biogenic sediments filling a fossil lacustrine basin at Wąwelnica, in the Szczecin Hills, within the left-bank part of the Oder River catchment are presented. The data reveal a natural Holocene sedimentation sequence similar to that found for other sites in central Europe. The geochemical record of palaeo-environmental changes, which may be a consequence of human activities in the proximity of the site, is distinctly bipartite. The part of the profile corresponding to the lacustrine sediment accumulation during the Greenlandian occasionally shows an increased mineral content and an elevated catchment erosion index. An incidental presence of Palaeolithic and Mesolithic communities is confirmed by archaeological evidence from a few sites in the Szczecin Hills. More distinct episodes of mineral matter supply and more pronounced changes in geochemical indicators can be inferred as occurring from the onset of the older part of the Atlantic until the Older Subboreal. Most of the flint artefacts discovered along with a collection of vessel fragments in the Mierzyn-Dołuje area are associated with the Neolithic occupation. However, changes in the deposits’ geochemistry do not reflect all the settlement stages associated with the consecutive human groups identified by archaeological evidence. Possible reasons include a low sediment accumulation rate having restricted peat mass accretion and prevented the storing of any higher amounts of water. This, along with the climate-change-caused lowering of the water table, could have periodically stopped the accumulation of autochthonous organic matter. In addition, intensified human activities coincided with periods of stable and low water level in the basin. On the other hand, breaks in human activity correspond with moist Holocene stages and local flooding events.
    Źródło:
    Acta Geographica Lodziensia; 2020, 110; 169-186
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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