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    Wyświetlanie 1-4 z 4
    Tytuł:
    Determination of the reactance of rail vehicles wheelsets
    Autorzy:
    Garczarek, Adam
    Woźniak, Krystian
    Olejniczak, Tomasz
    Waśkowicz, Radosław
    Stachowiak, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/33343772.pdf
    Data publikacji:
    2023-11-30
    Wydawca:
    Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
    Tematy:
    resistance
    impedance
    reactance
    traction vehicles
    measurement methodology
    wheelset
    Opis:
    The article presents issues related to the determination of resistance, impedance, and reactance of rail vehicles wheelsets in relation to applicable standards and regulations. The methodology of conducting this type of test is discussed, and a configured test stand is presented to measure the resistance and impedance of the wheelsets. The uncertainty budget for this type of testing is discussed. Exemplary measurement results are presented and analyzed.
    Źródło:
    Rail Vehicles/Pojazdy Szynowe; 2023, 1-2; 32-37
    0138-0370
    2719-9630
    Pojawia się w:
    Rail Vehicles/Pojazdy Szynowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Treatment with Fire Retardant on Properties of Birch Veneer and Manufactured Fire-Resistant Plywood
    Autorzy:
    Kawalerczyk, Jakub
    Dziurka, Dorota
    Pinkowski, Grzegorz
    Stachowiak-Wencek, Agata
    Walkiewicz, Joanna
    Mirski, Radosław
    Powiązania:
    https://bibliotekanauki.pl/articles/27323544.pdf
    Data publikacji:
    2023
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Tematy:
    plywood
    birch veneer
    fire retardant
    veneer properties
    Introduction
    Opis:
    The production of plywood from impregnated veneers allows a wood-based product protected in the entire cross-section to be obtained. The conducted research was focused on the properties of veneers impregnated with a mixture of potassium carbonate and urea, such as pH, wettability, colour change and surface roughness. In addition, the properties of plywood produced with melamineureaformaldehyde resin, such as the shear strength and formaldehyde emission, were the subject of research as well. It was found that the impregnated veneers were characterized by an increased pH, increased wettability, a completely different colour and unchanged surface roughness. Moreover, the impregnation of the veneers caused a decrease in the bonding quality of the plywood and a reduction in formaldehyde emissions from the finished product. It can be concluded that the melamineurea-formaldehyde adhesive is more suitable for the production of fire-resistant plywood than the urea-formaldehyde adhesive.
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2023, 66, 212; Art. no. 176617
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Finite element analysis and experimental verification of high reliability synchronous reluctance machine
    Autorzy:
    Łyskawinski, Wiesław
    Jędryczka, Cezary
    Stachowiak, Dorota
    Łukaszewicz, Piotr
    Czarnecki, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/2087025.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    synchronous reluctance motor
    measurement methods
    finite element analysis
    equivalent circuit
    Opis:
    The aim of this study was to investigate and analyse the synchronous reluctance machine. An accurate method for determining the lumped parameters of an equivalent circuit of the studied machine has been proposed. The method is based on the phase currents and voltages analysis at low slip operation. Experimental research of a synchronous reluctance machine is supplemented by simulation studies. The field-circuit model of electromagnetic phenomena in the considered motor was developed and used in simulation. The proposed method allows the numerical model to be verified by comparing the calculated and measured torqueangle characteristics of the machine. The test results obtained are presented and discussed. Achieved satisfactory concordance between simulation and experiment results proves that the proposed approach can be useful in the synthesis of reliable synchronous reluctance machines as well as in their control systems.
    Źródło:
    Eksploatacja i Niezawodność; 2022, 24, 2; 386--393
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Access to vaccination in the Greater Poland (Poland)
    Autorzy:
    Zaprutko, Tomasz
    Kopciuch, Dorota
    Paczkowska, Anna
    Sawicka, Dominika
    Stachowiak, Zuzanna
    Bogdaniec, Patrycja
    Kus, Krzysztof
    Nowakowska, Elżbieta
    Powiązania:
    https://bibliotekanauki.pl/articles/895651.pdf
    Data publikacji:
    2019-02-28
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    poland
    vaccines
    access
    pharmaceutical market
    pharmacies
    Opis:
    Immunization is a very effective health intervention. Moreover, the global vaccines market has been growing rapidly and costs of full children immunization are dramatically higher nowadays than 30 years ago. High vaccine prices may limit affordability of vaccination which is why we attempted an evaluation of availability and affordability of 7 and non-reimbursed vaccines mostly used in children in Poland. The study was conducted between October 2016 and October 2017 using a specially designed anonymous questionnaire comprising three closed-ended questions. The study tool was distributed by direct contact or via the Internet. Eventually, answers from 505 pharmacies from the Greater Poland region and 10 primary care clinics were included. 5 out of 7 vaccines were available in all types of facilities. There were some issues, however, with availability of Bexsero® and Nimenrix®. Considering prices, the highest difference (of more than 100%) was found for Infanrix hexa® and the lowest (38.5%), for Infanrix IPV+HIB®. In 88.17% of pharmacies included, patients were informed about a thermo-insulating package. 48.39% of respondents indicated that such package is free of charge, while in other pharmacies an average price for the package was EUR 0.48. Although availability and affordability of medicines are crucial objectives of the public health policy, it seems that access to vaccines in Poland might be an area for improvement. Thus, prices of non-reimbursed vaccines could be regulated in Poland nationwide. Moreover, to provide trustworthy information concerning vaccination, healthcare decision makers should consider social education about immunization as an important issue.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 1; 195-201
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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