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    Wyświetlanie 1-2 z 2
    Tytuł:
    Stability investigation of the pcm nanocomposites
    Autorzy:
    Cieśliński, Janusz T.
    Boroń, Paulina
    Fabrykiewicz, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/2233712.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    stability
    nano-PCM
    experiment
    surfactant
    alumina
    titania
    concentration
    Opis:
    Ensuring the stability is a key issue to be solved for the technical application of nanocomposites. In this work, fatty acid P1801 served as base phase change material (PCM)P1801, and its main ingredients are palmitic acid (58%) and stearic acid (38%). Titania (TiO2) and alumina (Al2O3) with mass concentrations of 1% and 5% were selected as nanoparticles, while polyvinylpyrrolidone (PVP) or oleic acid (OA) with mass concentrations of 5% were tested as surfactants. On the basis of the measured temperature distributions in the sample, which is subject to melting and solidification processes, it was determined which of the tested nanocomposites are stable and which are not. In addition, a thermal test was proposed to assess the stability of the produced nanoPCM, which consists in measuring the temperature distribution versus time according to a precisely given procedure.
    Źródło:
    Acta Mechanica et Automatica; 2023, 17, 3; 381--389
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Świadomość ciała u dziewcząt z anoreksją
    Body awareness in girls with anorexia
    Autorzy:
    Majewska, Paulina
    Boroń-Krupińska, Krystyna
    Szczepańska-Gieracha, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/464970.pdf
    Data publikacji:
    2015-09-30
    Wydawca:
    Akademia Wychowania Fizycznego we Wrocławiu
    Tematy:
    anoreksja
    świadomość ciała
    obraz ciała
    schemat ciała
    anorexia
    body awareness
    body image
    body schema
    Opis:
    Background. Anorexia nervosa is an eating disorder consisting in weight loss caused intentionally by the patient. The condition mainly occurs in adolescent girls. Its core feature is body image disturbances which lead to psychopathological symptoms manifested as intrusive thoughts about weight gain. Material and methods. The aim of the study was to examine body image in the group of 17 girls suffering from anorexia nervosa treated in the Department of Child and Adolescent Psychiatry in Wroclaw. The average age of the sample was 15 years. Body image was analyzed using the self-assessment Body-Esteem Scale (based on Franzoi and Shields, 1984) and a questionnaire (developed by the authors) concerning the patient’s subjective assessment of the size and shape of their body, feelings and thoughts in relation to their own body, satisfaction with their appearance and whether they had any authorities. Results. Descriptive statistics was used to analyze the data. Most of the girls expressed a negative attitude to their own bodies and assessed the size of their silhouettes as much larger than they really are. Noted decreased satisfaction with the appearance of particular parts of the body such as the abdomen, buttocks, thighs while the respondents generally expressed a positive attitude to the appearance of their face. Conclusions. The study confirmed distorted body image in girls suffering from anorexia. The vast majority of respondents perceived their bodies bigger than they were, expressed a negative attitude to it and were not pleased with their body weight.
    Źródło:
    Rozprawy Naukowe Akademii Wychowania Fizycznego we Wrocławiu; 2015, 49; 42-50
    0239-4375
    Pojawia się w:
    Rozprawy Naukowe Akademii Wychowania Fizycznego we Wrocławiu
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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