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    Tytuł:
    Effect of heat transfer on peristaltic flow in presence of heat generation against higher value of Reynolds number using FEM
    Autorzy:
    Javed, Tariq
    Hamid, Abdul H.
    Ahmed, Bilal
    Ali, Nasir
    Powiązania:
    https://bibliotekanauki.pl/articles/1839717.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    finite element method
    peristaltic flow
    heat transfer
    Opis:
    In the present investigation, heat transfer analysis of peristaltic flow in the presence of heat generation against high values of the Reynolds number using a numerical technique is presented. The Finite Element Method with the assistance of Galerkin’s variational method has been used on the governing Navier-Stokes equation in the stream-vorticity form. The graphs of computed longitudinal velocity, temperature distribution and pressure rise per wavelength are plotted against different values of an emerging parameter using a stream function and vorticity. The presented results are valid beyond the restrictions of long wavelength and low Reynolds number limits. Moreover, large values of the Reynolds number increases pressure rise per wavelength.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2021, 59, 2; 279-292
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low-temperature health hazards among workers of cold storage facilities in Lahore, Pakistan
    Autorzy:
    Ghani, Nadia
    Tariq, Foqia
    Javed, Houda
    Nisar, Numrah
    Tahir, Arifa
    Powiązania:
    https://bibliotekanauki.pl/articles/2085449.pdf
    Data publikacji:
    2020-01-20
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    musculoskeletal disorders
    work productivity
    hypothermia
    skin problems
    cold-related complaints
    respiratory illnesses
    Opis:
    BackgroundCold storage facilities are the most common workplaces that produce artificially cold work environments and are associated with different adverse effects on human health, work productivity and the occurrence of accidents and injuries. The aim of this study was to measure the antagonistic health effects on workers, so that common factors causing abnormal symptoms could be determined, and to gather basic information to monitor the associated health risks from the exposure to cold work environments.Material and MethodsA cross-sectional analytical study was conducted to investigate the occurrence of cold-related adverse health effects, musculoskeletal symptoms, skin problems, injuries, respiratory illnesses, general hygiene and occupational environment related to cold indoor workplaces, using the Standardized Nordic Questionnaire. A total of 200 subjects took part in this study, including 100 exposed and 100 unexposed to cold environments. A 1-way analysis of variance (ANOVA) and a t-test were applied to measure statistical differences and to differentiate the cases where variations occurred, using SPSS 16.ResultsThe study revealed that a longer and constant exposure to extremely cold indoor work environments significantly increased (p < 0.001) the cold-related symptoms and musculoskeletal disorders which ultimately reduced (p < 0.01) the efficiency, effectiveness, performance and work ability of the exposed workers.ConclusionsThe study disclosed various adverse cold-related complaints of the studied subjects who were exposed to extreme cold conditions during a maximum number of working hours. The most consistent problems were related to musculoskeletal discomfort, skin problems and respiratory abnormalities. Med Pr. 2020;71(1):1–7
    Źródło:
    Medycyna Pracy; 2020, 71, 1; 1-7
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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